#(how's that for a backfire kaien | Explore Tumblr posts and blogs

cheshiresense · 5 years ago

Note

Could you do KoyoIchi (Swinging Pendulum), please? C: I have fallen in love with this ship ever since you posted those short one-shots (or whatever they are called) a while ago.

Hmm you didn’t include an AU and I’ve already done a KoyoIchi SP AU in the last batch, there’s not much else I can write for that I think. So how about KoyoIchi post-canon AU instead, where Ichigo’s human body gives out after the Quincy War, so he ends up splitting his time between SS and the Human world afterwards.

Edit: omg wtf did i do i went off i’m sorry this ended up semi-background pre-relationship KoyoIchi + like a dozen unrelated headcanons thrown in it’s a mess fml

1. It’s not usually done, he’s technically dead now (but not a Shinigami, not a Quincy, not a Hollow, and not even a Human anymore), but he has a lot of support from a lot of people - Kisuke has no qualms crafting him a gigai that would allow him to draw his blade even without stepping out of it, and Kyouraku basically gives him free run of Soul Society after they hammer out what Ichigo is supposed to do there considering he’s now stronger than the entire Gotei combined but also he’s technically only eighteen years old.

(It would be scarier, Kyouraku thinks, if Ichigo’s moral fibre hadn’t already proven itself superior.)

In the end, they settle it like this - Ichigo attends the Academy part-time for all the lessons Kisuke and Yoruichi and Shinji never bothered hammering into him because it was never important to the war, attends university in the human world, and the rest of his time is his do with as he pleases, whether that’s taking missions directly from Kyouraku, visiting with his friends in various squads and being roped into doing paperwork, or digging up yet another rebel faction or secret invasion out of the woodwork (”Please don’t dig up yet another rebel faction or secret invasion out of the woodwork for at least a month, Ichigo-kun. One month, you hear? We still haven’t finished cleanup from the last one.”).

Because it’s Ichigo, it works. it’s not like he wasn’t already coming and going from Soul Society when he was still human. The Shinigami have let him get away with far too much already to put restrictions on him now, especially considering he’s saved all their asses twice over now, and that’s not even counting all the trouble in-between. If there are some who complain, well, there are even more who are capable of making sure nothing ever comes of it.

So okay, no rebel faction, no secret invasion, but Ichigo’s not Ichigo without something to work towards, and he’s always wondered why the Shinigami side of his family was slumming it out in Rukongai when they’re supposed to be nobility like Byakuya and Yoruichi. The answer is simple enough - Aizen had mind-whammied everyone after Isshin ran off and fabricated a coup that resulted in assassinations courtesy of the Second Division before the remaining Shibas were ousted from Seireitei overnight.

(It was only too easy for Aizen to make them believe it.Nobody ever questioned whether or not the Shibas could. They had the power. They just never had the ambition, which nobody could understand.)

No way is Ichigo going to take that lying down. So he goes and yells at Kyouraku, who says it’s complicated and would take time, but Ichigo reminds him of the Visored and Kisuke and Yoruichi and Tessai, all let back in in the wake of the Winter War. If they could be pardoned, and rightfully so, why can’t the Shibas too?

“I’m not saying they can’t forever, Ichigo-kun,” Kyouraku says placatingly. “But Central 46 will want… assurances-”

“You mean they’re scared to let my family back in cuz they might still be a little bit pissed from having three-quarters of their members murdered in their beds,” Ichigo summarizes flatly.

Kyouraku sighs and gives up all pretenses of a neutral party. “If you have a better idea…” He waves a hand at the general situation, eyes dark and intent on Ichigo’s face.

Ichigo snorts and straightens up. “Yeah. It’s called ‘being too strong to fuck with’. The old bastards are in session right now, aren’t they? I’ll be right back.”

One day, Kyouraku muses as he watches Ichigo go, this will probably not work, and it’ll come back to bite them all in the ass. Then again, Central 46 has run Soul Society their way or no one’s way for far too long; Yama-jii had always given them too much power. They’d learned nothing from Aizen, so maybe Ichigo is exactly what they deserve, straightforward and running on emotion, but fair, always, and decent in a way that Kyouraku thinks most of their government has forgotten how to be, if they ever knew to begin with.

One day, even Ichigo’s threats won’t make Central 46 back down. But a god doesn’t bow just because someone demands it, no matter how important they think their bloodline or rank or status is. And Ichigo is probably the closest thing they have to a god these days. A god, with plenty of friends to back him up if he needs it.

So Kyouraku leaves him to it - better Ichigo than him, less headaches in the long run - and he isn’t at all surprised when Ichigo sweeps back into his office five hours later, expression grim but triumphant, reiatsu still writhing like a living shadow around him as he informs Kyouraku that his clan will be needing their old estate back.

Kyouraku pushes over the paperwork he’d completed an hour ago, authorizing the full restoration and compensation of the Shiba Clan. Ichigo smiles at him almost fondly, features only slightly tinted with a banked sort of inhuman rage that he carries around almost constantly these days - it’s three steps left of his cousin’s memory, with Hollow glinting in his eyes and the shade of his ancestor draped across his shoulders. He’s gone again in the next moment, off to tell his family the excellent news, and Kyouraku thinks it was probably a good thing Yama-jii died when he did. However reasonable Ichigo still is, he is no longer that boy with the too-forgiving heart who took the insults they served him with all the doormatted self-sacrifice of a storybook hero.

(He came back from the Soul King Palace equal parts pensive and victorious, with old eyes and reiatsu levels they could no longer sense and a terrifying sort of detachment when he looked at them all. But his friends had fallen on him without care, only relief, and the icy distance in Ichigo’s mien had melted. Kyouraku had understood though, in that moment, that Soul Society would stand only so long as Ichigo allows it.

He likes Ichigo, he genuinely does. Jyuushirou had too. That hadn’t stopped his old friend from attempting to leash him, which had almost backfired in the end and literally only hadn’t out of the goodness of Ichigo’s heart, and it doesn’t stop Kyouraku now from catering to Ichigo’s whims. Only time would tell if this approach will work better or worse than Jyuushirou’s law-abiding one, and in the meanwhile, it doesn’t hurt that Ichigo doesn’t actually want anything Kyouraku doesn’t want to fix anyway. Soul Society has been his home for over nine centuries now. He does not want to see it burn. If that means dragging it kicking and screaming into a new era with a boy their world created to fight their wars for them looking over his shoulder, then Kyouraku will do it gladly.)

It takes almost three months for the Shibas to gather again and move back in. They’d scattered, after their exile, all across Rukongai, but Kuukaku is their head, and Ichigo has single-handedly wrested back their birthright for them, and when both of them call, the rest of the clan answers, trickling in in twos and threes and fours, suspicious and wary and not inclined to trust anyone but their own, but they come, and the first thing they do is raise wards around their home strong enough to withstand a siege from the Royal Guard.

“That’s everyone?” Ichigo asks, looking from the civilians to the once-Shinigami to the children. All in all, they barely make thirty total, and over half of them are from their retainer families.

Kuukaku shrugs tiredly at his side. She’s never looked older than she does now. “You know Isshin’s staying in the Human world for your sisters, but other than that, pretty much. Everyone else is dead.” She pauses. “Well, except one, but I doubt he’ll come. Kaien’s wife’s brother,” She adds for Ichigo’s benefit. “Koyonagi Senzou. He was the Kidou Corps Commander before Tessai, demoted to Academy teacher after some mission the higher-ups covered up. He was the only one the Gotei kept on after we were kicked out. Never found out whether he actually wanted to stay or if Central 46 insisted he stay. I wouldn’t be surprised if it was the latter. He’s wasted at the Academy, too useful to kill but too dangerous to let out of sight. As far as I know though, he’s still there.”

Ichigo frowns as he digests all this. “And he won’t come by to see you guys?”

Kuukaku shakes her head. “I doubt it. He was never really one of us.”

“Why not?”

Kuukaku shrugs again. “He never wanted to be. I didn’t know him very well, Ichigo, but he loved exactly one person, and she was more or less killed under Kaien’s watch. It wasn’t Nii-san’s fault of course, but she was sent out on a mission given to her by the Thirteenth Division lieutenant, and she never came back. He attended her funeral. That was the last time any of us saw him, although our Shinigami members reported glimpses of him in and around the Academy over the years.”

Ichigo hums. Kuukaku gives him an arch look and then snorts. “Shall I prepare a room for him anyway when I start renovations?”

Ichigo grins at her. “That’d be perfect, Kuukaku, thanks.”

2. Of course Senzou has heard of Kurosaki Ichigo. You’d have to be living under a rock in a cave in a different dimension to not have heard of Soul Society’s God-Slaying Saviour.

And of course he’s a Shiba. That lot always was more trouble than they were worth, too powerful for their own good, and too reckless or too confident or too stupid - Senzou has never really figured out which - to hide it from the world or at least play it down to keep the world from turning on them because of it. No subtlety at all. And look where it got them in the end.

In the aftermath of the Quincy War, he hears of the Shibas’ return to the city, and he can feel the power in the wards they almost immediately erect around their home. For protection, no doubt, because old dogs can learn new tricks after all, but to Senzou, it just looks like a very pretty cage. Why they - or the Visored for that matter - came back to serve the very people who betrayed them in some of the worst ways possible is beyond him.

Not that it makes much of a difference to Senzou. He’d ignored them for decades before their exile; no doubt, he’ll happily ignore them for decades more. They’re related only through an unfortunate marriage, and considering both parties are long dead now, what little obligation he had to them likewise expired years ago.

But, he thinks, as he watches an increasingly familiar head of orange hair slide into his classroom, someone forgot to give that memo to the Shibas’ newest pride and joy. Even Senzou - with expectations that literally no student has ever met - can admit that Kurosaki Ichigo attending Kidou lessons is a complete waste of time. Senzou spends his days teaching idiots the incantations for each of the ninety-nine standard spells, trying not to scratch his own eyes out when he has to grade their papers, and making sure they don’t blow themselves up when they practice producing them. Even the most advanced of the sixth-years can only manage spells in the fifties range, with a fifty-fifty chance of average-at-best success.

Ichigo memorized all the incantations in the first two weeks he was here. His first essay on the use of forbidden Kidou - instead of a regurgitation of laws citing the illegality of them that everyone else turned in - became a dissertation on their pros and cons, arguing that every case in which they’re used should be thoroughly investigated not only by Central 46 but also by a panel of Shinigami, and why the laws against them should be amended to allow for unexpected circumstances. The brat even had the gall to throw in quotes of interviews he’d conducted, and if it had been anyone else claiming to have received firsthand and eye-witness accounts of forbidden Kidou usage from names like Tsukabishi Tessai and Hirako Shinji, Senzou would’ve set them on fire for being such a bad liar. He couldn’t even fail the boy for incomplete research because the books he referenced might not be found in the Academy library but they all had Urahara Kisuke stamped on them.

And his practicals? A high level of reiatsu usually means the caster would have a harder time performing Kidou, especially when they’re first starting out, too much power shoved into the lower-level ones, too little control to hold together the higher-level ones.

Not Kurosaki Ichigo. That boy spent the first week putting holes into everything except his targets, went away for a weekend, and then came back with singed eyebrows and bags under his eyes but a resolute set to his jaw and picture-perfect Kidou at his fingertips. He didn’t even need the incantations anymore. And to make him even more of an anomaly, he could perform spells right up into the nineties. In fact, the higher the difficulty and reiatsu output, the better he was with them.

There is nothing the standard Kidou curriculum from any year can teach him. His learning curve is insane, and his essays read like he’s gearing up to go toe to toe with Central 46, never mind an Academy class.

He doesn’t need to be here. Senzou knows it. The other students know it. And Ichigo most certainly knows it too. And with the special allowances granted by the Soutaichou himself, he doesn’t even need permission to skip. The boy’s been given unprecedented free reign to come and go as he pleases, and yet he comes back, week after week after week. He doesn’t even have the decency to sleep through Senzou’s lectures. He’s a flickering candle in the corner of Senzou’s eye, all flame-bright hair and brown-gold-brown eyes and shadows that won’t stop moving, and that unwavering attention he pins on Senzou every time makes it damn clear exactly what he’s waiting for.

Shibas. No subtlety whatsoever.

The bell rings. Bags are packed. There’s a scramble for the door.

“Kurosaki-chan,” Senzou calls in bored tones without looking away from sadistically adding an extra assignment to the board. If no one notices, that’s their problem. “Stay behind.”

There are some interested whispers and prying eyes, but one glance from Senzou sends them scurrying away. And then Ichigo is there, sauntering up with his perpetual scowl - not at all like Kaien this one. The two are as charismatic as each other, from what Senzou’s observed. But Kaien had people wrapped around his finger because he had a knack for putting them at ease and making them feel special and making himself both approachable and worth looking up to. Ichigo on the other hand scared a lot of people when he first showed up at the Academy with an armful of books and a gruff disposition that didn’t lend itself to making allies, let alone friends. He wasn’t arrogant, just introverted, but it made him the kind of genius that people resented.

And then Senzou caught him in the hallway one day, looming over a mousy-looking fifth-year student huddled on the ground, and at first, he’d thought Kurosaki was bullying her. Everyone’s golden boy, picking on a shrinking violet of a girl. But then Ichigo had stooped down and gathered up all the books spilled across the floor before offering them back to the girl. The girl had still cowered, but she’d accepted them, and when Ichigo reached out and hauled her to her feet, she’d flinched but hadn’t moved away once she was on her feet again and Ichigo had let her go.

Then Ichigo had told her, quite clearly, “Next time someone can’t keep their hands to themselves, break their fucking wrists. Or kick them in the balls. Or tell them to fuck off. Start a scene so they have to stop. Do something. Don’t just fucking stand there.”

And then he’d stormed off, and the girl - Fujiwara, from the Kyouraku family - had stared after him, all baby-duckling wide eyes. And the next time Senzou had happened across her, it was just in time to see her chuck one of her textbooks at the head of one of her bullies. Said bully had staggered back, and then purpled with anger, already moving forward with fists clenched. Half a second later, he was on the ground and wailing from a broken nose, and Ichigo was standing over him, murder glowing gold in his eyes and black reiatsu streaking his hair and pooling at his feet.

Nobody had touched Fujiwara after that, especially since the girl had taken to following Ichigo around. Ichigo had still scowled like no one’s business, he’d also been seen kicking Fujiwara’s ass in one of the training rooms, they studied together in the library, and they ate together in the courtyard when Ichigo happened to stay for that.

And gradually, other students joined in, tentatively, some nervous, some with hero worship in their eyes, all hopeful. Ichigo never turned any of them away, but one day, he started a debate in the library about laws that would take species outside of Shinigami into consideration that ended with raised voices and enthusiastic opinions that got the whole giggling bunch thrown out, and another day, he suggested a free-for-all game of tag where only Kidou could be used to catch each other which ended with everyone sweaty and gasping and wanting another round, and in calmer in-betweens, he answered when the others finally asked him about what Hueco Mundo was like, what the Material world was like, what Arrancar were like, what Humans were like, and he never lost his temper with them even when he had to explain something more than once.

He was still blunt and borderline rude and not at all like Kaien, like a Shiba, not outgoing or friendly or instantly personable. But the charisma was the same, people couldn’t help but be drawn to him, and it took weeks for Senzou to realize he was just as susceptible to it as Ichigo’s growing circle of friends within the Academy. So susceptible he was literally stalking him everywhere just to see what other chaos he was sowing.

That’s probably why he wants the boy gone so badly. He’d sworn he’d never forgive the Shiba Clan for taking his sister away from him, the only leeway they got was that he wouldn’t actively go after them either because Miyako wouldn’t want him to, and it wasn’t as if it was difficult to keep such a vow. He’d never liked the Shibas anyway. When they’d been slaughtered and cast out, and no assassins had shown up at his door in the aftermath, all he’d thought was good riddance.

But Kurosaki Ichigo…

Under any other circumstances, Senzou would be thrilled. Here is a student who challenged the world around him and brought a storm to the Academy.

But this isn’t any other circumstances, and as Ichigo stops in front of his desk, a beast glinting behind his eyes and a dead king’s inheritance pulsing in the shadow splashed at his feet, Senzou meets his gaze and slices a mocking smile in his direction.

“Kurosaki-chan,” He starts, smirk widening when Ichigo’s eyebrows twitch. “The Academy’s star part-time pupil. What exactly are you still doing in my class?”

Ichigo shrugs. “I signed up for it, your lectures aren’t boring, and I’m trying to figure you out.”

Senzou feels his smile grow fixed. “And how is that going for you?”

Ichigo scruffs a hand through his hair, pauses briefly to frown tug at the shoulder-length strands like he wants a haircut, and then shrugs again. “You’re the one following me around all the time, what do you think?”

They stare at each other for a moment.

“Let me make one thing very clear, Kurosaki-chan,” Senzou finally says. For once, he doesn’t feel like weaving his usual mind games. “I don’t know what your clan has told you, but I have no desire to play happy families with them. I know you Shibas tend to be all about bringing family together, but I am not one of you.” His lip curls. “Do not push this issue any further than you have. Am I understood?”

Ichigo cocks his head, something animal in the way he watches Senzou now. “Kuukaku agreed to reserve a room for you at the compound if you ever want it, but you don’t have to if you don’t want to. I’m not here for that.”

Senzou’s eyes narrow. “Then what are you here for?” He gives the boy a sardonic look and cuts him off preemptively. “Besides class.”

Ichigo grins, quicksilver bright, and something in Senzou recoils with surprise.

“I don’t really have a plan,” The boy tells him. “But I’m getting my family settled back in, and making sure nobody can fuck with them ever again.” He aims another considering look at Senzou. “If you don’t wanna be all buddy-buddy with them, that’s fine. It’s not any of my business if you wanna hammer your shit out with them or not. But you were connected to them even if you didn’t like it, and that doesn’t change just because that connection’s gone. So I guess what I wanted to figure out was whether or not someone’s fucking with you too.”

Senzou opens his mouth, then closes it when nothing comes out. How embarrassing. He settles for a derisive smile that feels a touch too brittle on his face. “I don’t need your protection, God-Slayer.”

Ichigo immediately makes a face. “Don’t call me that. And I didn’t say you did. But when I start something, I like to see it through, so I thought I’d check just to be sure.”

Senzou scoffs with disbelief. “Then why didn’t you just ask?”

Ichigo rolls his eyes like he thinks Senzou’s being dumb on purpose, which is a new experience for Senzou. Usually he’s the one rolling his eyes.

“Well you didn’t want me to, did you?” Ichigo says, looking exasperated now. “You were curious about me, and all the stalking was recon or whatever.” He levels a thoughtful look on Senzou before snorting with something like amusement. “You are the type. But yeah, anyway, now you know. If you need help, the offer’s open indefinitely. But I’ll stop coming to class if you don’t want me here.”

He trails off, arching an eyebrow in question. When Senzou doesn’t reply, the boy shrugs once more, adjusts the strap of his bag, and turns to leave.

Senzou… Well, he’s pretty much been on the back foot this entire conversation, hasn’t he? There’s something about Ichigo that just… throws him off. It’s frustrating. Unnerving.

And yet… Ichigo didn’t push. Kaien would’ve pushed. The rest of his family would’ve pushed. It’s what Shibas do when they want something - push and push until they get what they want, a single-minded persistence hidden under their signature cheerful geniality that makes the rest of the world believe them to be the nicest clan in all of Soul Society.

Miyako had said no, the first time Kaien had asked to court her. But he’d asked again and again, until she’d said yes, and she’d been happy to, Senzou had made certain of that, she’d been perfectly willing, had found a good man in Kaien and been glad she’d finally given him a chance.

But she’d said no first, and Kaien had pushed, and it just… rubbed Senzou the wrong way. Because once upon a time, Shinigami had plucked them out from Rukongai, dusted them off and provided the training and shuffled them into the military, all expenses paid, but no had never been an option, and that had become all the more true after Miyako became such a public, vulnerable figure, not only Third Seat of the Thirteenth but also wife of a clan head.

When Central 46 had come knocking, interested in Senzou’s prodigal skills with Kidou, they hadn’t even needed to drop Miyako’s name for Senzou to know that saying no then wasn’t an option either. He’d been pushed into their service, and it had taken Miyako’s death for Central 46 to finally leave him alone, solely because he had no one else for them to hold over his head.

It’s not the Shibas’ fault, not really. It’s been long enough that Senzou can admit that, if only to himself. Miyako’s choices were her own, and even if she hadn’t married him, Central 46 probably would’ve found another way to get to him through her. But Senzou has always been petty and vindictive at heart, and he’ll blame the Shibas for the rest of his life, because at the end of the day, they’re just like all the other nobles in this place. What they want, they’ll push until they get, because privilege is in their blood.

So Senzou flounders when Ichigo doesn’t push his advantage. The boy is already halfway to the door, and somehow, Senzou is certain, if he doesn’t say anything now, Ichigo won’t come back. It’s so wildly different from what he’d expected, so unexpectedly not-like-a-Shiba, that he has to fumble for something to say for an unforgivably long moment. Him, fumble. This whole conversation has been one unexpected surprise after another, and later, Senzou will blame the shock for his next decision.

“Wait.”

Ichigo stops and turns back. He doesn’t look surprised, but neither does he look triumphant or even just smug.

Senzou suppresses a grimace. “The school has nothing left to teach you about Kidou.”

Ichigo nods in unabashed agreement.

Senzou snorts softly. “But I do. And I guarantee it won’t bore you.”

Ichigo blinks, and a crooked smile slowly curls at his lips. It doesn’t erase his frown, but it softens his brow and makes his features look less harsh. “You sure you wanna teach me?”

Senzou scoffs and pulls out his chair. “I wouldn’t have offered otherwise.” He gives himself a mental shake and drags a grin back onto his face, sharp enough to cut. “Sit your ass down so we can figure out a schedule, Ichi-chan.”

Ichigo instantly loses the smile and glowers like a thundercloud. Senzou all but basks in the familiarity of it, inwardly relieved at being back on steadier ground.

“Don’t call me that, asshole!”

He probably shouldn’t have offered, should’ve just let him go and good riddance. But Senzou hasn’t been taken so off-guard so quickly in a long time, and it had been frustrating and unnerving but underneath both…

There is a storm waiting on the wings of Seireitei, and Kurosaki Ichigo is the one holding its reins.

And Senzou. Senzou is just curious enough to want to see what that storm will bring.

3. “Did your hair grow three inches over the weekend?” Senzou asks the moment Ichigo walks into one of their weekly lessons.

Ichigo dumps his bag in a chair and scowls at him. His hair has been swept up into a bun, which is certainly a feat considering the last time Senzou saw him three days ago, it had only brushed his shoulders.

“This body is seriously shit at regulating itself,” Ichigo grumbles. “I didn’t have time to go to the barber’s, and Kuukaku threatened to shave me bald if I tried to chop it off with my Zanpakutou again.”

Senzou squints at him. “You realize that’s not normal.”

Ichigo rolls his eyes. “I didn’t have a knife on me, and it was getting in the way, okay? Don’t judge.”

This time, it’s Senzou’s turn to roll his eyes. “That wasn’t what I meant, Ichi-chan. Shinigami bodies don’t suddenly grow several inches of hair overnight.”

“You’d be surprised,” Ichigo mutters before shaking his head, and Senzou watches as black reiatsu crackles lazily across his shoulders. “I’m just kinda weird. Excess reiatsu plus funky biology apparently means random hair growth and dye jobs.” He shrugs. “Kisuke’s still figuring it out.”

Senzou hums noncommittally. “Urahara Kisuke. Your… mentor?”

Ichigo pulls out the books Senzou had given him last week, along with a notebook and the latest essay Senzou had assigned him. All are tagged with multiple sticky notes.

“Kind of?” Ichigo sounds like he isn’t all too sure himself and even less concerned about it. “He’s… Kisuke.”

Senzou eyes him curiously. “You don’t care that he basically engineered half your life then?”

Ichigo stills. Then he glances up with Hollow-gold eyes, and Senzou smiles and meets them without flinching.

“Why would you say that?” Ichigo asks in even tones, but the office suddenly seems darker.

Senzou shrugs carelessly. “Urahara has a bit of a reputation for… working outside the box. It’s not just me who thinks it, Ichi-chan. There aren’t many who knew him who wouldn’t take one look at you and guess that he had something to do with your existence.” He pauses. “Although admittedly, I suppose the worst of these rumours come from the ones who want him back most. Central 46 doesn’t benefit half as much without his skills in assassination and technological development. It must’ve been a blow to their egos when Urahara refused their invitation to come back after the Winter War. They might be hoping enough unease over any other projects he’s bound to be working on would be enough to make him come back under their protection-”

“That’s not called protection,” Ichigo growls, and Senzou stops, words withering on his tongue.

There is something about the black abyss of Ichigo’s unblinking stare that makes some base instinct in even Senzou want to back away, run, throw himself at this eldritch entity’s feet and beg for mercy. He squashes the urge and smiles like monsters don’t exist.

Ichigo blinks. The darkness in his eyes recede, and the room clears again, bright with the sunshine pouring in through the open window. A shadow passes over his face, and when he opens his mouth to speak, Senzou catches a glimpse of fangs.

“Well that sucks,” The boy remarks succinctly like the silhouette on the far wall behind him doesn’t outline a grinning mouth with too many teeth. “It’s none of their business anyway. Kisuke prefers his shop. He’s his own boss there, and he likes it that way. Central 46 will just have to deal with Kurotsuchi.”

He flips open his notebook and shoves his essay over. “Now come on, we only have an hour today, and you said you’d go over this bit with me.”

Senzou nods and drops the subject. But three weeks later, he laughs when whispers tell of five Central 46 members retiring from their seats, replaced by one Shiba elder, one Shihouin, one Kuchiki, and two seated officers from the Gotei, one of which has served long enough that she doesn’t mind semi-retiring, and the other who prefers more time at a desk job over constant fieldwork. Both have roots that trace back to the slums of Rukongai. Twelve days after that, the Soutaichou announces a new official position filled by Urahara Kisuke - Human World Liaison - and a team of his choice, effective immediately.

“You don’t waste any time,” is Senzou’s greeting the next time he sees Ichigo after that debacle.

Ichigo, seated on the edge of the Academy roof and surveying the rest of Seireitei (like a ruler looking over his kingdom), waves a dismissive hand that trails solid shadows through the air. “People who’ve never been Shinigami shouldn’t be allowed to judge them. Kyouraku-san agreed.”

“I’m sure he did,” Senzou agrees, fighting near-hysterical glee down to a chuckle as he drops down to sit beside Ichigo.

He wonders if this is what it looks like, for a man to crown himself without even trying while most of the world cheers him on.

He glances to the side, arching an eyebrow when he finds Ichigo watching him. “Yes, Ichi-chan?”

There’s a disappointing lack of irritable twitching this time, but the thoughtful look Ichigo has levelled on him instead is more interesting.

“I have finals starting next week,” Ichigo says abruptly. “So I won’t be coming by the Academy until I’m done.”

Well, less interesting than he’d expected. “I’ll pick up your assignments for you,” Senzou offers, feeling generous. It’s not every day Central 46 takes a beating. He doesn’t care about Aizen, but if there was one thing he did right, it was butchering the judiciary authority on the way out. One group of them anyway.

Ichigo snorts. Rude. “Thanks, but I was thinking, you could join me down there for once instead of me coming up to meet you here. I want to concentrate on my university exams, but I have to eat and stretch my legs sometime. If you want, I could show you around campus. Kisuke can lend you a gigai so you won’t even have to request one from the Twelfth and wait for the acquisition forms to be approved.”

The first thing Senzou wants to say is I can’t. Because he can’t. Central 46 can’t make him do shit anymore, but short of slaughtering his way to the Senkaimon or disappearing into the Rukongai and living out the rest of his life as a fugitive, he can’t leave Seireitei. He doesn’t hate it here so much that he’d prefer either of those options, but the truth of the matter is, this is as much his home as it is his prison.

(A very pretty cage indeed.)

So he can’t, but Ichigo isn’t stupid, he should’ve already figured it out, or guessed, if not from the start after whatever his family told him about Senzou, then in the five months since. Stuck at the Academy because he’s too much of a wild card to go on missions.

Ichigo isn’t stupid, but neither is he cruel, not to those he has no quarrel with - that much Senzou can accept as truth. That he’s bringing this up anyway…

So, “How?” He asks instead, raising his eyebrows when Ichigo actually barks out a laugh. And then his eyes widen when Ichigo twists fingers through the air, and a Garganta springs into existence beside them.

“This can take us there,” Ichigo grins. “And no one will ever even know if you don’t want them to.”

Senzou stares from him to the murky void and back again. “…Why?”

Why are you doing this? Why would you offer?

They’ve known each other for five months, six if you count the one Senzou spent studying him. Most of that time has been spent in private tutoring sessions, and it’s benefitted Senzou as much as it has Ichigo. He technically shouldn’t be teaching Ichigo even half the Kidou Corps secrets he’s already imparted, but Ichigo makes it worth his while - quick on the uptake, a challenge in the sparring ring, and a breath of fresh air from the tedious drudgery of teaching his other students. Occasionally, they even go out for meals, tucked away in a quiet corner of a restaurant or a food stand. And sometimes, Ichigo brings souvenirs back with him from his trips to the Human world - fiction, toys, tech, trinkets the living modern age has that Soul Society does not - and he gifts them not only to his friends amongst the students but also to Senzou these days.

It’s a friendlier relationship than Senzou thought he’d ever have with anyone outside his sister, doubly so for a Shiba. Then again, Ichigo’s barely that, thank the Soul King, even if he was raised by one of the worst examples of that clan.

“Why not?” Ichigo counters, like it isn’t downright unnatural for anyone to do anything for Senzou, mostly because he’d rather stab himself in the face than fall into anybody’s debt. People avoid him when they can because he is cruel, and that’s the way Senzou likes it. He has high standards and little tolerance for things that bore him. Nothing bores him as easily as people do.

Until Ichigo.

“You don’t wanna be stuck here all the time,” Ichigo continues. “And I have an easy way out. So yeah, why not?”

Senzou turns his gaze to the horizion, past the sprawling streets and buildings of Seireitei to the sun setting beyond the wall.

He looks at the Garganta again. When Ichigo doesn’t move to stop him, he reaches over and lets his fingers drift past the mouth of the portal. The void is cool to the touch but not freezing the way he’d half-imagined.

He retrieves his hand. “A campus tour then?” He muses lightly, and Ichigo’s features brighten in response.

Senzou almost sighs. He thinks he might understand now. Ichigo is a little more like a Shiba after all. It’s just that he’s also a little more manipulative than one would expect of him. Senzou had all but told him not to interfere, to play hero for someone else, so Ichigo had backed off. But he’d figured out what Senzou wanted anyway, and his solution was to offer another way out instead.

Persistent, without disrespecting boundaries, and cunning enough to find another answer. In that regard, he’s nothing like his Shinigami relatives, who are always so loud about their intentions.

Charismatic, but… discreetly, almost insidiously so.

Senzou blinks. And then glances sharply at Ichigo again. His eyes look bronze in the light of the sunset, with the heat of his Hollow just beneath it. He has his head propped up against one loose fist, elbow balanced on one knee.

He smiles, almost guileless if not for the possessive resolve in the curve of that expression, and Senzou thinks, unbidden, ah. That’s how he won their devotion.

He gave his friends and family and allies everything they wanted, everything they needed, threw his heart and soul and body into every fight in their defense, shattered himself and rebuilt himself to protect the ones he’d taken under his wing, and so when the time came, how could any of them have done anything less for him?

It had probably not even been something Ichigo had done consciously from the beginning, it was just how he was built, through a quirk of the genetic fun park Urahara had ensured, or perhaps from the numerous near-death experiences life had forced him into. Ichigo probably hadn’t been aware, at first.

But he definitely is now.

Senzou thinks Ichigo is only just starting with him. Senzou’s already been claimed, because - for whatever reason - Ichigo wants him.

It probably says a lot that even this early on, even having already figured it out, Senzou… can’t say he cares enough to protest.

A Shiba in his bones, but leagues more dangerous by far.

4. The Human world is bigger than he remembers. Size-wise, it’s the same. But there’s a lot more in it than he thought, and he isn’t sure if that’s due to the passage of time or because he’d never spent more time than strictly necessary here when he took missions on the material plane back in the day.

Either way, he’s free to explore it now, even if just a small part of it for the time being. The campus of Ichigo’s school is large and sprawling, and with Urahara’s gigai and fake IDs and some Human money (he trades them for a box of seal traps even Tsukabishi Tessai wouldn’t know of because they’re Senzou’s own creation, and Urahara smiles like he understands and doesn’t object), it’s easy enough to come and go once Ichigo drops him off.

“You bought an apartment?” Senzou asks the first time Ichigo shows him the place and lets him poke around inside. It’s recognizably a living space, but it’s foreign to him all the same, with a generous open floor plan and wide windows, marble countertops in the kitchen and dark wooden cabinets and a bathroom constructed of polished chrome and gleaming tile.

“Kisuke bought me an apartment,” Ichigo corrects, flopping down on the couch where he has papers and books spread all over the coffee table and floor. His hair’s shorter today, barely past his shoulders, tipped black and hanging loose. Senzou is vaguely curious about what the boy’s classmates think of it.

“I wanted my own place,” Ichigo explains. “But Kisuke took one look at the rent I could afford and practically frog-marched me here instead. Then he had Yoruichi-san steal all my stuff and move it here, and then he said I might as well just take it because staying would be less work than moving all my stuff back.” He snorts, but it’s a fond sound. “The asshole. It’s not like I’d want to turn this place down. But it’s a bit much, so I try to help him with his research projects whenever I can in exchange.”

Senzou digests this with briefly raised eyebrows but says nothing. Urahara probably considers this another desperate form of making amends, and Ichigo probably knows it too. He probably wouldn’t have accepted otherwise.

“There’s a guest bedroom,” Ichigo calls after him as Senzou wanders down the hall to investigate exactly that. “Rukia’s stayed overnight, Renji too, and a few of my human friends have as well, but I always clean the place after they leave, so if you wanna stay tonight, feel free.”

That’s all the conversation between them for the rest of the day. Ichigo already showed him the campus the day before, and after tossing him a key to the apartment, Senzou is free to wander off and explore on his own.

Two weeks of regular visits to the Human world, and he still feels a little awkward in one of the shirts and jeans and sweater that that Quincy friend of Ichigo’s had shoved on him before whirlwinding back out again, apparently neck-deep in the middle of his own finals project.

“It’s Ishida, he makes clothes for everyone,” was Ichigo’s unhelpful clarification. “You help by walking around and looking good in them.”

So Senzou does, and part of him feels like he should stand out more, but nobody gives him more than a passing glance at most. Well, some do, but he recognizes shallow attraction well enough to ignore it.

In the end, he finds himself spending the most time in the libraries and lecture halls, slipping into the back of a classroom and listening to lessons he actually has to pay attention to to even understand some of what the professor is talking about. The science lectures mostly go over his head, and he’s never been interested in that field anyway so he doesn’t bother putting much effort into following them. It’s the literature courses he likes the most. There aren’t any at the Academy, not like this, and there are so many more books in so many more languages and genres than Senzou ever thought there existed in the world.

Soul Society suddenly seems so small in comparison.

It’s always an exercise in patience every time he has to return to Seireitei to teach now. After the first two weeks of almost daily trips to the Human world, he orders - on a whim - the students from his upper-year classes to split into groups before assigning each of them a project due at the end of the term on the theoretical creation of three new Kidou spells.

Group projects are not a thing at the Academy. Senzou wonders why.

He tells them that at least two of the research sources have to be from outside the Academy, and he smirks when he follows Fujiwara Asuka to the First Division compound to speak with her cousin, and then the Eighth to speak with her cousin’s former lieutenant, and then even braving the Fourth, straight-backed and stiff with anxiety but marching in anyway with her nervous group members in tow until she manages to wrangle fifteen minutes of time from a few of the healers willing to answer her questions about Kaidou.

Even here, Ichigo’s influence flourishes.

Outside the classroom, Senzou begins collecting copies of Human books. He half-bribes, half-blackmails the librarian into setting aside a section for him, and then he begins his own project of filling it.

“You’ve been busy,” Ichigo remarks when he staggers in from his last exam and collapses into a chair just as Senzou finishes setting the table for dinner.

Senzou arches an eyebrow, smirking when Ichigo just rolls his eyes.

“People tell me things,” Ichigo informs him, barely waiting for Senzou to sit down before falling onto the meal like he hasn’t eaten in a week.

“You would make a poor king if people didn’t,” Senzou murmurs, smiling serenely when Ichigo’s eyes flick up to meet his. It’s not as intimidating when his cheeks are bulging like a chipmunk’s.

Actually, Ichigo in the Human world just seems less… overwhelming in general. It isn’t as if he’s any less powerful. This particular gigai doesn’t restrict him in any way. But there’s a relaxed quality in him here that Senzou’s observed in the past three weeks that’s always absent when he’s the rawest form of himself up in Seireitei.

“Soul Society needs to change,” Ichigo says at last, instead of denying anything. “If that means kicking it in the ass until it stops fucking up the lives it’s supposed to be looking after, then that’s exactly what I’ll do.”

Yes, and Senzou has no doubt he’ll succeed. The majority of those in power have no desire to stop Ichigo. Those who do aren’t strong enough. And Ichigo wants it. He wants it with a conviction Senzou has never seen in anyone, almost obsessive in its unfaltering desire… like the abyssal hunger of a Hollow and the eternal grudge of a Quincy and the timeless pride of a Shinigami all rolled into one.

Ichigo wants it, and he’ll get what he wants.

The Soul King knows the universe owes him that much, and even if it didn’t, Senzou doubts it would make a single bit of difference to their God-Slayer.

He lifts his mug in a toast. “Then I look forward to your endeavours. You’ll need to watch out for Central 46′s spies though. I’m sure they won’t take this lying down.”

Ichigo cocks an eyebrow. “Is that an offer to keep your ear to the ground for me?”

Senzou attempts an innocent face, which works about as well as he expects when Ichigo snorts. “A mere Academy teacher like me probably can’t help much, but…” He thinks of the seals he’d planted throughout the entire Central 46 compound every time he’d had to report in, slowly but surely sneaking invisible ears into the heart of Soul Society’s government. “I might hear things now and then. I’ll pass it on if it happens to be interesting.”

Ichigo grins and tips his own mug at Senzou like they aren’t talking treason.

5. “So.”

Senzou almost rolls his eyes. The Shibas’ commitment to their theatrics clearly hasn’t changed.

“Kuukaku-chan,” He says instead as he strides into his office and smothers the urge to draw his blade on the woman sitting on his desk like she’s posing for Most Dramatic. He smiles instead, hiding the teeth of it behind his lips. “What a pleasure.”

Kuukaku grins back without any of the same courtesy. Of course. “None at all, I’m sure, so I’ll get straight to the point. What are you doing with Ichigo?”

Senzou does roll his eyes this time. “You’ll have to be more specific. As of yesterday, he’s teaching me how to drive a car.” His lip curls. “It’s a mode of transportation Humans have developed.”

“I know what a car is,” Kuukaku snaps, finally hopping down from the desk to prowl across the room. “Why is he teaching you? What do you want with him?”

Senzou pauses halfway through setting down a stack of essays to be marked. “…If I said vengeance on the Shiba Clan once I’ve convinced him to side with me, would that be about what you were expecting?”

Kuukaku glares and crosses her arms. “Ichigo would never.”

Senzou smirks. “Then you have nothing to worry about, do you? You’ve wasted a trip.”

He brushes past her to flip through the paperwork on his desk. End-of-term reports are coming up, and that’s always a waste of his time, so the sooner he gets them done the better.

“I know you resent us for what happened to Miyako,” Kuukaku says from behind him, and Senzou wonders if he can just walk out. Probably, but there’s no way this woman won’t cause a scene. “But Ichigo wasn’t part of any of that.”

Senzou heaves a sigh and turns back around. “Kuukaku-chan, I thought we just established that we both know that using Ichigo against your family won’t work.”

“No,” Kuukaku nods. “But you could hurt him to get back at us.”

They eye each other for a long moment, not quite hostile but far from amicable.

“…My vengeance for Miyako was not lifting a finger when your clan was all but massacred,” Senzou finally says, ignoring the way Kuukaku’s expression pinches. “And so long as contact with you and yours is kept at an absolute minimum in the future, I don’t care anymore. Besides, there is no point in targeting Ichigo to get to you.” He sneers. “He’s a Shiba, but it would be an insult to consider him one of you.”

Kuukaku bristles but doesn’t explode in anger the way some of her even more hot-tempered relatives would. She stares at him instead, and when she doesn’t speak right away, Senzou goes back to organizing the contents of his desk.

“Say I believe that,” Kuukaku finally says, ignoring Senzou’s scoff. “Maybe you are hanging out with Ichigo with no ulterior motives. The gods know he makes that easy. But if that’s what you’re doing, there’s no way you won’t be seeing more of the rest of us eventually. He wasn’t raised the way a Shiba should’ve been, with none of our traditions and only a fraction of the family he should’ve had. That’s on us. But he’s still family, and so long as he doesn’t say no, we’re going to be a part of his life. You’re going to have to accept that if you plan on marrying in.”

The shelf closes with a resounding thud under his hand, and judging by the give, he’s probably cracked the back of it too. He barely notices as his gaze snaps back up to stare incredulously at his uninvited visitor. “I beg your pardon?”

Kuukaku smiles thinly, and this time she looks more amused than anything else. “Something to consider. But you’re more like Miyako than most people would think.” Her arms drop to her sides as she turns abruptly towards the window. “That’s all I had to say. You’re a smart man, Senzou. I don’t need to tell you what will happen if you fuck up.”

And before Senzou can demand an explanation or - more likely - set her on fire for cracking such an abysmal joke, she’s gone, disappearing through the window in a rush of Shunpo.

Senzou stares after her, then at the books he’d carried in earlier, then at the paperwork he’s putting off for the weekend because he has dinner with Ichigo tonight… just as he does almost every night nowadays.

He runs a hand over his face.

Shibas.

6. He says nothing. He’s self-aware enough to know (now, damn Kuukaku) that there’s something there, a spark, a connection, a pull Senzou has never felt towards anyone. He isn’t going to call it love or whatever Kuukaku thinks is happening because it isn’t. He finds Ichigo fascinating and endlessly entertaining, and anyone willing to face down Central 46 is worthy of some admiration in Senzou’s opinion. That Ichigo plans on turning the whole system upside-down and actually has the power to achieve it only raises Senzou’s esteem for him.

But he says nothing because Ichigo knows all this already. The day Senzou’s first instinct, when an assassin sent by Central 46 attempts to take Ichigo’s head, is to slit the hapless woman’s throat - even though he knows full well that she wouldn’t have come anywhere near to succeeding - is the moment Ichigo gets irrefutable proof that Koyonagi Senzou is willing to kill for him.

Ichigo doesn’t gloat of course, he isn’t the type. Senzou half-expects it anyway, breath caught in his lungs for a moment with something disgracefully close to fear twisting in his gut as he turns to check Ichigo’s reaction.

But Ichigo only wrinkles his nose and toes the fresh corpse at his feet, and then he glances at the blood splatter dotting Senzou’s shirt and offers to get him a new one.

He also reaches out to touch the hilt of Senzou’s Zanpakutou before nodding once, deliberately, solemnly, the weight of it as much a thanks as it is an acknowledgement.

And that was that. Senzou relaxes, doesn’t bat an eye when shadows surge up and swallow the body whole, and goes to change into another shirt. The incident passes, and it will be longer still before Ichigo’s enemies realize they probably should’ve tried harder to get rid of Senzou years ago. They’d thought themselves safe enough though: they would never earn Senzou’s allegiance, but at the same time, nobody - including Senzou - ever thought anybody else would earn it either.

But the point is, Ichigo knows. Senzou has no need to speak of it, and both of them are content with that. If something more comes of it down the road, Senzou doesn’t think he’d fight it. He lost this battle a good while ago, and he never even cared.

In the meantime though, he spies on Central 46 and enjoys what time he can spare in the Human world and continues reconstructing Seireitei’s education system brick by stubborn brick. There’s a kingdom to conquer and a god Senzou has pledged himself to, and for now, that is enough.

#headcanon meme: answered #bleach #koyoichi #koyonagi senzou #kurosaki ichigo #kyouraku shunsui #shiba kuukaku #post canon au #headcanon #hi brain #wtaf happened

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getoffthesoapbox · 7 years ago

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Hey, I hope you don't mind, but I was wondering if you could help me understand the science/biology in VK and the logic behind a cure. I understand it from a pacifist perspective, but it doesn't make sense to me in terms of classifications and genetics. Considering that Yori's grandkids attend her funeral, aren't vampires a subspecies to humans? I'm also surprised vampire-born is treated as a disease instead of human-turned-vampire. Plus, how would they go about treatment for all vampires? (O_O)

(Anon who asked about VK science) I didn’t have enough room to finish, sorry… But thinking about what I just said… I guess the cure would treat both naturally born vampires and human-turned, but I thought in the beginning there was a clear divide between the two. And in the case of just vampires, you would be looking at their DNA? Anyway, I just want to add that I just recently got back into the series, so I might be misunderstanding A LOT, but I love your (and everyone else’s) analyses :)

Oh, what a fun ask, my friend! Thanks for bringing it my way. ;)

I think a portion of the problem we have here is that…Hino is a lazy writer who knows her audience probably isn’t a bunch of scientists who can point out how crap her science is. Unfortunately, I’m a creative type myself, so I can’t point out whether her internal logic works or not on a scientific level, but I think I can help piece together what we do know, and then speculate further based on where I think she’s going with this. ;) You can let me know if I miss anything from where you’re standing.

Okay so, here’s what we know for sure:

Purebloods existed before 10,000 years ago, but they were scattered–a great climate change erupted and they suddenly realized there were more of them. (It’s kinda implied Kaname might be Dracula, since he forgot his name, lol.)

These first Purebloods are what we’d call the “Progenitors.” They are all born to human parents and were probably created by some sort of viral infection or it’s some kind of viral mutation that had permanent effects on the initial subjects (at least as far as I can tell within Hino’s worldbuilding), and something (never specified) happened to either “switch” certain people’s Pureblood genetics from “off” to “on” or it distorted an already existing gene into a Pureblood gene. Either way, the effect’s the same–something in the DNA got warped.

In other words, Purebloods are likely a species mutation or evolution, depending on how positively or negatively you want to view the genetic switch. This would make vampirism less of a disease (which would require an external parasite or bacteria) and more of an issue with the genes themselves (probably more akin to a spontaneous cancer, only one that actually effects more than just the internal organs)

Okay, so then you have the vampire “types” that spawn from Purebloods. Purebloods are the eternally lived types who can actually activate or give the vampire gene in/to other people (but this “enslaves” the new vampire to the sire thanks to the sire’s blood being in the new vampire’s bloodstream–Kaname calls this “poison” in the story, and it allows Purebloods to exert their will within other vampires). Purebloods, of course can’t be killed by anything before the invention of the anti-vampire weapons. Next up are nobles, who are probably the offspring of Purebloods and other vampires with the least amount of “human” in them. Nobles age faster, aren’t as long lived, and can’t make servants, giving them more “human” qualities (likely another mutation of the gene). Then there are Level Cs, who are likely the offspring of, say, humans and nobles (such as Aidou and Yori), who would also have shorter lifespans than nobles and be susceptible to regular weapons. Then there are Level Ds, who are the “turned” former-human vampires such as Zero. Then at last there are Level Es, who are Level Ds who go rabid because their formerly human bodies can’t deal with the vampire gene being switched on.

We can assume vampires lower than Pureblood can be killed by normal means (the literature is a little…contradictory on this; Kaname’s past implies people needed the weapons to deal with the massive army of Level D servants, but since only hunters can wield anti-v weapons, and since Takuma kills a Level E back in arc 1, at some point it must have been discovered that Level Es–who are really just insane Level Ds–can be killed by regular weapons). Ruka worries about Kain in VKM 12 after a bomb going off, which means Hino’s probably establishing that anything less than a Pureblood can be killed by normal human means. Plus, nobles and lower are no real threat to humanity since they can’t turn humans–they can only be a parasitic nuisance by stealing blood. No biggie, you can deal with them like regular criminals. The problem, as Kaname and the Hooded Woman note, is the Purebloods.

Ultimately the “cure” is mostly necessary for the Purebloods, but once it’s created, it should be able to take care of any lesser form of the vampiric gene, because all vampires come from the same “source” generally speaking–the Progenitors who had the genes switched on in the first place.

In the past, Kaname begins performing experiments to see if he can do something about the Purebloods’ ability to regenerate and turn humans. His research takes him into two directions: 1.) a weapon to destroy the Purebloods period, and 2.) a potential cure for vampirism. His research on #2 goes nowhere during the Ancestor period, and he leaves his records in the Kuran Manor basement. Instead, he manages to get a breakthrough on the weapons. The breakthrough on the weapons requires the sacrifice of the blood and heart of the person who will become them.

The Hooded Woman steals the march on Kaname, throws her heart in the forge, and feeds the remainder of her blood to the Hunters (thus creating a line of men and women who carry her genetics within their bodies, although they’re still human). This Hunter line is what eventually takes us to the future where Kaien, Zero and Ichiru are born.

We know that the Hooded Woman’s genetics screw up the human birth process in women who carry hunter babies (whether the woman is hunter herself or human doesn’t matter). If that woman has twins, one twin will “eat” the other (this likely happens for vampires too). This is what is known as the “cursed twins.” Kaien is a completed one of these–a.k.a., a twin who ate his twin in the womb.

Zero on the other hand is different from Kaien. Zero is the “first” twin to not eat his twin in the womb. Ichiru is born, and the fragment is not completed. Kaname takes a canon interest in this during the course of the story. The stated “reason” for this is that he just wanted to create a weapon against the Purebloods–but uh, if that was the case, any hunter should do for that purpose. =P What was unique about Zero was that his genetics defeated the vampiric genes within the womb. That meant there was “something special about Zero.”

Obviously something backfired during the course of the original series, and probably with Zero turning vampire Kaname gave up on his research since he felt Zero would be useless if he wasn’t human. Instead he switched to just using Zero as a shield for Yuuki and a potential monster against the Purebloods later on. However, it’s important to note that Kaname had the Night Class (and Aidou) creating the first tablets that could curb vampires’ thirst, so he was still experimenting with ways to fix the vampire problem.

Last, and this is also relevant, we know that any vampire can be turned human again by a Pureblood’s sacrificing their life. Isaya’s wife did this to their child, Juri did this to Yuuki, Yuuki does this to Kaname. Hino’s world science is settled that you can “flip off” the gene, and you can also flip it back on via another Pureblood biting and feeding the formerly-vampire human and turning them back. The narrative basically is solidly established that this gene can be flipped on and off with the right sacrifice. Unfortunately, this only works on a one-to-one basis (Isaya’s wife can only turn one child, Juri can only turn Yuuki, Yuuki can only turn Kaname, etc.) It doesn’t work for a universal cure. This is where Zero, or a Zero/Yuuki combination, or Ren will come in. ;)

At the end of the original series, we have it confirmed that Aidou was able to complete Kaname’s research and create a drug that turns vampires human, which could not be used on Kaname due to his heart being too scorched from the forge. So we know for sure that some way, somehow, Aidou was able to complete the cure. The only question is “how.”

Cue events of the story, and here we are in the present time with Aidou’s research picking up where Kaname left off.

What we know about the current state of the research:

Aidou discovers that there was a “missing component” that wasn’t found during Kaname’s Ancestor experimentation days (because Kaname’s notes are from before the sacrifice of the Hooded Woman.

This “missing component” is Kaien’s special genetics. We know Kaien is a completed twin with the Hooded Woman’s genetics in him.

Now, here’s where Hino gets kinda vague–we don’t know exactly what Aidou needs from Kaien. Is it a blood sample? Is it a bone sample? Is it a heart sample? Who knows! Likely a blood sample will do for now, so we’ll just “assume” for the sake of simplicity that’s what Aidou’s working with.

We know Aidou’s research is currently failing to accomplish what he wants, which means likely whatever’s going in Kaien’s blood is a step in the right direction, but it’s not the key to the cure. This brings us back to Zero, remember, who in the womb was able to defeat the twin curse. This means Zero’s genetics likely were able to “switch off” the vampiric genes within him. Kind of like people who are born to HIV+ parents who end up immune to HIV. (Yay evolution!)

What are the potential ways the cure might come about and be created, based on what Hino’s set up?

Okay the first way is the easiest–we just need blood donations! This variant requires no sacrifice on anyone’s part; Aidou just needs the requisite amount of blood from Zero (or Ren, or Zero and Yuuki together, or Kaien), and mix it in the right quantity with whatever else he’s got in his experiment, and presto chango, we have a pill vampires can take that can switch “off” the vampiric genes.

However, we know from the forge business that most of Kaname’s research required some kind of magic “sacrifice” on the part of the person providing the solution. The “cure” may also require some sort of sacrifice, such as a specific organ like a heart or the brain in addition to the blood. Or it may require that the subject be dead so that the gene can’t be “switched back” once it’s in the body of the cured subjects. Hino has a bit of magic in this story, so this is where the science gets a little fuzzy. ;)

I had a very old theory (a long time ago, back when I thought Kaname was doing the cure solution in the original series) that you would need Zero to drink all the bloodlines of all the Purebloods in order to create the cure. (This was all based on an offhand comment Kaname makes in the 70s about feeling bad he has to “let” Zero drink from Sara). If this is the case, the cure may not be possible unless all “strains” of the genetic defect are accounted for within it–basically kind of like counteracting a bunch of viral mutations. If Zero’s blood only has, say Kurans and Toumas in it, his “cure” will only cure people who have Kuran and Touma blood in them–it won’t cure people with Shirabuki or Hiou or Shoutou blood in them. This would require Zero to have to drink from all the bloodlines, and then (probably) either sacrificed or just a blood bag for the cure.

So as far as I can tell, there are a couple routes to the cure which either lead to a full on sacrifice on the part of the person who’s the solution or to just a significant blood donation.

Phew that was long. I hope that was somewhat helpful, and that I didn’t confuse you even more. =) If not, I’m sorry! To be fair, there really isn’t too much to go on for how the cure would work; these are mostly just my speculations at this point based on Hino drawing Kaien into the fold for the cure solution. ;)

Feel free to drop by any time!

#vampire knight #vampire knight memories #vk cure theory #zero cure theory #vk science anon #guess i need a tag for the cure theory now

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