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[kanehara-chillveil2]

Riki’s death scene ☺️

TW: Character death, Riki’s kinda a bitch before he ends up 6ft under with basically half the cast of bsd

Featuring Chuuya and Kunikida lol

Riki stared down at the cluttered papers on his desk in the Port Mafia's dimly lit office, his fingers twitching as his thoughts spiraled. It was becoming harder to focus lately, the numbing effects of "Chill Kill" creeping further into his everyday life. The air in the room was thick with tension, but it wasn’t from the mission briefing in front of him. Kotoko stood across from him, her eyes burning with frustration.

「あなたはそのように去る必要はありませんでした。銃を突きつけて、ただ去る？」 Kotoko's voice cracked. “You didn’t have to leave like that. Holding me at gunpoint and then just leaving?"

Riki's jaw clenched as he avoided her gaze, pretending to be absorbed in the mission details. He knew this argument was coming, but he had hoped to avoid it—he always did. 

「俺はお前のためにやったんだ。」 Riki replied quietly, his voice barely above a whisper. "I did it for you."

「嘘だ！」 Kotoko snapped, stepping closer to his desk, her fists trembling at her sides.

"Liar!"

Her breaths were labored—her COPD often made arguments like these physically taxing for her—but right now, anger was overriding everything. 

「ポートマフィアなんて？！」 She paused, struggling for breath, and Riki winced, hearing the familiar strain.

"The Port Mafia? You joined them and left me at the Agency, and for what?!"

Riki finally met her gaze, eyes cold but betraying a flicker of pain. 

「お前を治すための金だ。」

"To get the money to cure you."

His words were blunt, like a blade striking at the heart of the matter. But there was no comfort in them, only the brutal truth.

Kotoko’s face twisted in disbelief. She shook her head, her voice trembling. 「それで？それが理由で、私の兄はポートマフィアの一員になって、人殺しになったの？」

"And that’s supposed to make it okay? That my brother became a killer for that money?"

Riki's hands curled into fists. He couldn't argue with her. Every word she said cut deeper than any weapon could. But he had to hold onto the reason he'd done it, the reason he'd sacrificed everything—even his own soul—for her.

「私はいつも殺人者でした。私がどうやって私たちを解放したか覚えていませんか？ 」 He stood abruptly, his chair scraping the floor harshly. “I was always a killer. Don’t you remember how I freed us?”

Kotoko stepped back, her anger giving way to something colder—something more hurt than fury. She exhaled, a sharp breath that left a hollow ache in the room. 

「なら、私にはもうお前はいらない。」 Her voice was ice.

"Then I don’t need you anymore."

Riki flinched, the numbness of his ability failing to shield him from her words. He turned away, pulling his coat from the rack. 

「任務がある。」 His voice was steady, masking the storm inside.

"I have a mission."

Without another glance at her, he strode toward the door.

「リキ！」 Kotoko called after him, her voice cracking.

"Riki!"

But he didn’t turn back. The door slammed shut behind him, and the silence that followed was suffocating.

---

The rain fell in sheets, a steady, rhythmic drumming against the concrete streets. Riki sat on the rooftop, staring blankly at the city below. His mind was silent—too silent. There were no thoughts, no emotions, just the cold emptiness that had taken root in his soul.

He had lost track of time, of reality itself. Days blurred together, punctuated only by the increasing strain on his mind. It had been too long since he felt anything—fear, joy, even anger. His power had drained it all away, and now his mind teetered on the edge of a precipice he couldn’t even recognize.

He was called in for a mission tonight. A dangerous one, they said. They had warned him—his friends, his comrades—but Riki hadn’t listened. He couldn’t feel the weight of their concern anymore. He couldn’t feel anything.

Suddenly, the comm in his ear crackled to life.

"Riki! They're closing in on you! Get out of there!"

The voice was urgent, but Riki felt no sense of alarm. The numbness wrapped tighter around him, clouding his judgment. He blinked, the words barely registering.

There was no fear, no instinct telling him to run. His ability had dulled every impulse of survival, every sense of urgency. His body was ice, his mind fogged in a cold that wouldn’t lift. Even as figures began to move in the shadows below, Riki’s heart remained steady, his breaths slow and measured.

With a detached calm, he triggered his ability. The air around him froze, a biting cold that radiated from his body. Ice began to creep along the ground, crawling toward the approaching enemies. But something was wrong. The cold didn’t stop. It spread further, faster than he intended. His control was slipping.

The figures below cried out, scrambling to avoid the freezing wave, but Riki couldn’t hear them. His ability was spiraling out of control, and he couldn’t stop it. Panic should’ve gripped him, but even now, his mind was too numb, too exhausted to react.

The cold continued to expand, its deadly reach consuming everything in its path. Riki stood in the center, eyes vacant, as the temperature plummeted. He didn’t feel the cold, not anymore. He didn’t feel anything.

Then, the ice beneath his feet cracked.

In an instant, the rooftop collapsed beneath him, sending Riki plummeting into the building below. The world spun, a blur of concrete and ice, but Riki’s mind remained eerily calm. He hit the ground with a sickening thud, his body crumpling in a broken heap.

---

It was later that night when Kotoko found herself standing in front of Chuuya, her stomach twisted with a sickening sense of dread. His face was grim, lips set in a thin line as he met her eyes.

「リキは。。。死んだ。」 His voice was heavy, almost regretful.

"Riki… is dead."

Kotoko's breath caught in her throat, her body trembling as the weight of his words hit her like a ton of bricks. 

「どうして…どうしてそんなこと…」

"Why... why did this happen..."

Her voice was barely a whisper, her mind unable to process the reality that her brother, the one she had just fought with, was gone.

Chuuya handed her a small envelope, his expression softening as he spoke quietly. 「これは、リキが最後にお前のために残したものだ。」

"This is the last thing Riki left for you."

With shaking hands, Kotoko opened the envelope. Inside was a receipt for her final COPD treatment—paid in full.

Tears slipped down her cheeks as she collapsed to the ground, her sobs muffled by the rain. She hadn’t needed the money. She had needed her brother. And now, he was gone.

---

Kotoko sat in her room at the Agency, staring at the ceiling. It had been a week since Riki’s death, and the void in her chest had only grown. No amount of medicine, no final treatment could take away the ache of losing him.

The Armed Detective Agency had welcomed her back, in their own way, but she could feel the strain. They didn’t look at her the same. She could sense the hesitation in their eyes, the unsaid doubts. Ever since Riki had joined the Port Mafia, it was like a shadow had been cast over her too. She had tried to push through it, to ignore the cold stares, but it was harder every day.

「裏切り者じゃないのに…」 She muttered bitterly to herself.

"I’m not a traitor..."

And yet, it didn’t matter. The ADA didn’t trust her the way they once had. They hadn’t explicitly said anything, but Kotoko knew. She saw how they exchanged glances when she was in the room, how they hesitated before giving her any real responsibilities. She was just the sister of a traitor in their eyes, and no matter what she did, that wouldn’t change.

She clenched her fists, her mind flashing back to Riki’s cold expression before he left on that final mission. All the sacrifices he had made, the blood he had spilled, just to make sure she could live a life free of illness. And what had she done? Thrown his words back at him.

「リキ、私は何をすれば…」

"Riki, what am I supposed to do...?"

Her voice cracked in the stillness of her room.

A knock at her door startled her. It was Kunikida, his expression unreadable as he entered the room. 「体調はどうだ？」 he asked, his voice flat. "How are you feeling?"

Kotoko stared at him for a moment before shaking her head. 「大丈夫だよ。」 She forced the words out.

"I’m fine."

But Kunikida’s eyes told her everything she needed to know. There was pity there, and perhaps a lingering distrust. He didn’t believe her. None of them did.

After he left, the silence of the room swallowed her again. Kotoko bit her lip, her thoughts racing. The ADA wouldn’t trust her again. She could see that now. And what was left for her here? Riki was gone. Her role here was broken. She was just... here.

She stood up, a sudden decision blooming in her chest. She couldn't stay. Not like this. The ADA wasn’t her home anymore—it never would be. And as much as she wanted to deny it, there was only one place left for her to go. The place where her brother had chosen his path. 

---

Days later, Kotoko found herself standing outside the Port Mafia’s towering headquarters, the weight of her decision settling heavily on her shoulders. Her heart pounded, but her steps were steady as she entered the building. 

She approached Chuuya, who stood waiting in the dark corridor. His expression was unreadable, but his sharp eyes studied her closely. 

「来たか。」 He muttered, crossing his arms.

"So, you’ve come."

Kotoko met his gaze head-on. She had no illusions about what this meant—what she was giving up. But there was no turning back now.

「兄の後を継ぐ。」 Her voice was steady.

"I’m taking my brother’s place."

Chuuya tilted his head slightly, a faint smile tugging at his lips. 「本気か？」 He asked, his tone almost mocking.

"Are you serious?"

Kotoko’s eyes hardened. 「信じられなくてもいいしかし、あなたがそれを好きであろうとなかざると、私は参加します。」

"You don’t have to believe me. But I’m joining whether you like it or not."

For a moment, Chuuya didn’t respond, simply studying her with those calculating eyes. Then, finally, he nodded. 「分かった。」

"Alright.”

As Kotoko stepped deeper into the shadows of the Port Mafia, she couldn’t help but feel a grim sense of purpose. The ADA had left her behind, but here, she could start again. She would honor her brother’s memory—not by running from his choices, but by walking the path he had chosen for both of them.

And this time, she wouldn’t look back.

NOTE: Chuuya is the one who got Riki to join the PM in the first place and he’s also the one who trained Riki upon joining and now Kotoko!

[kanehara-chillveil2]

“Since I can remember.”

“We started seeing signs that something might be wrong when she was around 6. Then when we got out a member of the ADA officially diagnosed her with COPD.”

“You’re a doctor or whatever, right?”

-@kanehara-chillkill

Hmm? That I am. Is there anything you need?

[kanehara-chillveil2]

“Yeah- I swear I leave for 2 days and then her condition gets worse..”

“Not my fault!”

“You don’t believe in coats! It IS your fault!”

“You’re a doctor or whatever, right?”

-@kanehara-chillkill

Hmm? That I am. Is there anything you need?

[kanehara-chillveil2]

Kotoko’s temp is hotter then Fum— I mean the sun. Her temperature is hotter then the sun 😊

“You’re a doctor or whatever, right?”

-@kanehara-chillkill

Hmm? That I am. Is there anything you need?

[kanehara-chillveil2]

“Alright.”

I would ASSUME he has like a clinic or something so Koko would sit on the like doctor table thingy??? 😭😭

“You’re a doctor or whatever, right?”

-@kanehara-chillkill

Hmm? That I am. Is there anything you need?

[kanehara-chillveil2]

“Alright. I’ll go get her.”

Quick little like 5-10 minutes later, he came back with Kotoko, who was coughing a lil bit

“She has COPD too, by the way.”

“You’re a doctor or whatever, right?”

-@kanehara-chillkill

Hmm? That I am. Is there anything you need?

[kanehara-chillveil2]

RING! RIIING! Riki’s phone went off with a certain vampire’s voice coming out the other end.

Fuma: “Riki? Kotoko? Where the flip are you both!? It’s literally a school night… You both better be at Decelis’s dorms in 30 minutes or you both are grounded.. no pressure. Alright bye.”

“Oh. We gotta go. Thanks again,”

“Bye!”

And the two ran off with Kotoko waving bye.

Kotoko and Riki were in a forest, with Riki being the camera man for a TikTok k-pop dance challenge that Kotoko wanted to film. If he didn’t love his sister he’d have left a WHILE ago

-@kanehara-chillveil2

*she was walking through the forest, calmly and quietly, before she noticed them*

[kanehara-chillveil2]

“Woah..”

“Thanks so much Miss Mother!”

Riki hesitantly took the replacement from her and inspected it for a second before he gave it to Kotoko. Who disconnected the tube and attached the opening to the new supply and pressed a button. There was a quick whirring sound before the replacement bottle was empty and Kotoko reattached the tube. With a smile.

“Okay.. I guess you aren’t bad.. thanks a lot.”

Kotoko and Riki were in a forest, with Riki being the camera man for a TikTok k-pop dance challenge that Kotoko wanted to film. If he didn’t love his sister he’d have left a WHILE ago

-@kanehara-chillveil2

*she was walking through the forest, calmly and quietly, before she noticed them*

[kanehara-chillveil2]

“We don’t know what it’s called.. it’s some kind of liquid drug type thing that kinda clears her lungs up and lessens the symptoms for a week or two.”

Kotoko pulled up her sleeve, revealing something that looks like those things diabetic people wear. It looked like it was literally ATTACHED to her skin with needles on the sides that puncture into her skin. A thin clear tube was connected to the device on her arm and a packet in her back pocket.

Kotoko and Riki were in a forest, with Riki being the camera man for a TikTok k-pop dance challenge that Kotoko wanted to film. If he didn’t love his sister he’d have left a WHILE ago

-@kanehara-chillveil2

*she was walking through the forest, calmly and quietly, before she noticed them*

[kanehara-chillveil2]

“Uhhh— yeah. She’s fine, probably wolf allergies, or something-“

And he was interrupted by yet another cough from Kotoko and her staggering a bit, leaning on him slightly for support.

“Uh.. I don’t feel good, maybe she can help..? If she wanted to hurt us she probably would have let the wolves get us..”

SIIIIGH.

“Okay.. she probably isn’t. She has trouble breathing a lot of times, COPD, or something like that. If I can’t get her to our step brother’s then she’ll pass out if something.”

Kotoko and Riki were in a forest, with Riki being the camera man for a TikTok k-pop dance challenge that Kotoko wanted to film. If he didn’t love his sister he’d have left a WHILE ago

-@kanehara-chillveil2

*she was walking through the forest, calmly and quietly, before she noticed them*

[kanehara-chillveil2]

“Huh?-“

Riki and Kotoko exchanged glances and Kotoko coughed a few more times, not a cute and demure sounding cough. More like “CAOUGH”💀

Kotoko and Riki were in a forest, with Riki being the camera man for a TikTok k-pop dance challenge that Kotoko wanted to film. If he didn’t love his sister he’d have left a WHILE ago

-@kanehara-chillveil2

*she was walking through the forest, calmly and quietly, before she noticed them*

[kanehara-chillveil2]

“Uh.. Riki-ya.. you hear that right?” lil cough

Both Riki and Kotoko looked around.

“Are those the wolves you mentioned?-“

Kotoko and Riki were in a forest, with Riki being the camera man for a TikTok k-pop dance challenge that Kotoko wanted to film. If he didn’t love his sister he’d have left a WHILE ago

-@kanehara-chillveil2

*she was walking through the forest, calmly and quietly, before she noticed them*

[kanehara-chillveil2]

“Mother.. mother? Yeah that’s creepy. Uh, usual don’t hurt us we’re just totally innocent in every way children uh, now we’re leaving!! Kotoko LETS GO.”

Kotoko and Riki were in a forest, with Riki being the camera man for a TikTok k-pop dance challenge that Kotoko wanted to film. If he didn’t love his sister he’d have left a WHILE ago

-@kanehara-chillveil2

*she was walking through the forest, calmly and quietly, before she noticed them*

[kanehara-chillveil2]

Riki is IMMEDIATELY ready to fight if he has to, he stood in front of Kotoko.

“My sister was filming something. We were just leaving. Who are you? You look like a Living Shadow.”

Kotoko and Riki were in a forest, with Riki being the camera man for a TikTok k-pop dance challenge that Kotoko wanted to film. If he didn’t love his sister he’d have left a WHILE ago

-@kanehara-chillveil2

*she was walking through the forest, calmly and quietly, before she noticed them*

[kanehara-chillveil2]

Riki PERKED up (assuming she like said it out loud or something—)

“Kotoko, someone else is here. Let’s go.”

Then he spoke out louder.

“Whoever if there, if you’re going to try to hurt us, try me. I dare you.”

Kotoko and Riki were in a forest, with Riki being the camera man for a TikTok k-pop dance challenge that Kotoko wanted to film. If he didn’t love his sister he’d have left a WHILE ago

-@kanehara-chillveil2

*she was walking through the forest, calmly and quietly, before she noticed them*

[kanehara-chillveil2]

“KoKo, are we done yet? This forest gives me the creeps.”

Riki sighed and lowered the phone after Kotoko struck a ending fairy.

“Yeah! That’s it! We can go now! I can edit it when we get ‘home’!”

Kotoko and Riki were in a forest, with Riki being the camera man for a TikTok k-pop dance challenge that Kotoko wanted to film. If he didn’t love his sister he’d have left a WHILE ago

-@kanehara-chillveil2

*she was walking through the forest, calmly and quietly, before she noticed them*

[kanehara-chillveil2]

Riki and Kotoko

IMPORTANT: MOD IS MOVING THIS ACCOUNT, REFER TO @onionhaseyo-ji FOR DETAILS.

There's trouble in our life

But sometimes we have to fight

Full name: Kanehara Riki (兼原・リキ)

Age: 18

Birthday: December 31 Afilliation: Port Mafia

Ability:

CHILL KILL -

Description:

"Chill Kill" allows Riki to maintain an eerie calm and heightened focus in high-stress, life-threatening situations. When the ability is activated, Riki's heart rate slows, his senses sharpen, and his movements become incredibly precise and efficient. This calm state enables him to react quickly and accurately, making him nearly untouchable in combat. 

Effects:

-Enhanced Reflexes and Perception:Riki can perceive the world in slow motion, giving him a significant advantage in dodging attacks and countering his opponents.

- Emotion Suppression: He becomes emotionally detached, allowing him to carry out dangerous or morally ambiguous actions without hesitation.

- Lethal Precision: Any attack Riki performs while "Chill Kill" is active is executed with deadly accuracy, making him a formidable opponent even against those with more powerful abilities.

Drawback:

Overuse of "Chill Kill" can lead to a temporary emotional numbness that lingers even after the ability is deactivated. This detachment could make it difficult for Riki to connect with others or feel empathy, potentially straining relationships and his mental well-being. Additionally, prolonged use could result in physical exhaustion, as the heightened focus and precision take a toll on his body.

“Going through a lot,

but we still stand strong

The sound of your voice still leads me along”

Full Name: Kanehara Kotoko(兼原 コトコ) Afilliation: The Armed Detective Agency

Age: 17

Birthday: January 1 Health Condition: COPD caused by the house she and her siblings lived having a lot of cigar smoke and other things.

Important Fact(s): Due to her condition, Kotoko tends to be in the hospital more then Fuma’s place (she and Riki live there with him and he pays for any hospital bills)

Ability:

Veil of Aether

Description:

"Veil of Aether" allows Kotoko to generate and manipulate a mysterious, ethereal smoke that can serve multiple purposes, making it a versatile support ability for teammates.

Effects:

- Shrouding Mist: Kotoko can create thick, impenetrable smoke that obscures vision, making it difficult for enemies to see or target her. This mist can be controlled to either expand and cover a wide area or concentrate around specific targets.

- Intangible Passage: The smoke has an intangible quality, allowing Kotoko and her allies to temporarily phase through solid objects while enveloped in the smoke, enabling quick escapes or surprise attacks.

- Enhancement Aura: When the smoke surrounds an ally, it enhances their abilities. For a "Chill Kill" user like Riki, it further sharpens his focus and extends the duration of their heightened senses. For a vampire ability user, it amplifies his regenerative capabilities and grants him greater control over his vampiric powers.

Drawback:

While "Veil of Aether" is powerful, it requires precise control, and overuse can lead to Kotoko losing her grip on the smoke, causing it to dissipate prematurely or even turn against her. Additionally, creating too much smoke can obscure the vision of allies as well, potentially causing confusion or accidental friendly fire. Kotoko also becomes more vulnerable then she already is when maintaining large volumes of smoke, as it divides their concentration.

EXTRA:

To interact with a specific sibling just put either a 🎧 emoji for Kotoko or a 🦌 emoji for Riki! posts by one of the twins will be in pink for Kotoko and blue for Riki or their names and emoji in the tags.

BACKSTORY

Riki Oneshot no. 1

EXTRA: Me after splitting up the siblings and putting Kotoko in the ADA with NæVis as her caretaker and Riki as a member of the PM so that he can do stuff like get money to pay for Kotoko’s treatments and such because he hates the feeling of having to be financially dependent on Fuma

mod is @onionhaseyo-ji