#but this one is mostly outdated in style/mood. wow i can tell this is 2021 writing on re-read XD i still love this amber so much though

[dandelion-wings]

Re-reading current WIPs leads to re-reading old stuff no longer in progress, which lead me today to the old stuff from @theabysscomeshome and I's Harbinger AU. And it occurred to me that, while I doubt I'm ever fixing up or finishing the outdated stuff enough to ever put this on AO3 at this point, I could go ahead and post the one complete piece from it that's not completely jossed, and that I still like, here. >>

For reference, the Harbinger AU is essentially a Venti-Tsarita roleswap (with a side of Jean-Childe roleswap but that doesn't show up at all in here), wherein the Knights of Favonius essentially fill the Fatui's role.

---

The great tower in front of them is in disrepair, shattered and half-broken, but the cubical mechanism for opening the door still works once the hilichurls out front have been cleared away. As the great door grinds open, tilted sideways at an awkward angle, a cheerful voice rings out from behind them both.

"Oh, it's Sir Diluc!"

Diluc spins around, his hand dropping to the hilt of his claymore. Lumine, noting his narrowed eyes and tight jaw, follows suit. In front of them both is a young woman, or older girl, in a leather traveling outfit with bright red accents that stand out against the swirling snow--including a headband that looks like nothing so much as a pair of rabbit ears. She pulls up the goggles that had been over her eyes and grins at them.

"Hello! I haven't met you before. Who are you?"

"Outrider," Diluc says, his tone guarded, though he doesn't yet draw his claymore. "You're a long way from Mondstadt."

"So are you! It's so nice to meet you here. I haven't seen you in ages." The girl skips forward as if she hasn't noticed Diluc's tension or the hand tightening further around his claymore's hilt. "Sir Kaeya and Master Jean will be so glad to know you're all right!"

"*Don't*," Diluc growls.

Those names Lumine recognizes. "Diluc, who is this?"

"Outrider Amber of the Knights of Favonius. Which makes her very far from her operational area."

"Oh, that's expanded a little bit since you left, Sir Diluc." She veers away from him to bound smiling over to Lumine. "I still haven't gotten your name."

"My name is Lumine," she says, fighting the urge to reach for the hand that Amber holds out to her. The girl's cheerful friendliness is at sharp odds with how tensely Diluc watches her. Also, if she's more recently from Mondstadt... Lumine has to ask. "Have you met a boy who looks like me on your travels from Mondstadt? I'm looking for my brother."

Amber looks her up and down, then shakes her head, an apologetic look on her face. "No, I'm sorry, I haven't. But I can put up some posters for you once I get back! Uh... if you can tell me a place to contact you...."

"Don't bother," Diluc says.

"I don't have any way for you to contact me, since I'm on the road. But I appreciate the offer." Lumine looks over at Diluc, trying to judge if it's *really* necessary to keep her hand on her sword. "I thought the Knights of Favonius were dangerous? But Amber's willing to put up posters, even if there's no point."

"It's not her I'm worried about. It's who might come behind her. Is that Lawrence woman in Snezhnaya too?"

"Don't call her that! At least call her Sir Eula!" Amber stamps a foot and glares at him. "And I can't tell you her movements, but she's not with me. I'm here because Sir Kaeya's too much of a layabout to do his own intelligence missions."

"Hey, should you be telling us that?" Paimon asks. She's drifted forward over Lumine's shoulder, her curiosity drawing her in.

"You're with Sir Diluc, so it's fine. He's a little grumpy, but he's not a bad guy."

Diluc sighs and straightens up, finally releasing his claymore. "She wouldn't tell us if she thought we could interfere with it. Which means she won't tell us the details, either."

"Nope!" Amber beams at him. "I'm so lucky I saw you guys in the snow. Your hair really stands out, Sir Diluc, and you always wear that black coat, so I thought it must be you. Even though it's not part of the mission, Sir Kaeya will be glad to know you're still going strong. And that you made a friend."

"Hmmph." Diluc crosses his arms over his chest. "And I'm sure it will help him track my movements."

"Duh! He worries about you, you know." She looks past them at the open door to the tower, then turns to Lumine. "If you're going in there, do you want some help? I have the time, and I wouldn't mind getting out of the cold for a while. Snezhnaya is *freezing*. Besides, I can tell Sir Diluc all about how Master Jean and Sir Kaeya are doing."

Lumine glances over at Sir Diluc. He looks a little annoyed, but not alarmed, and he doesn't try to refuse for her. This is her mission, given by the Tsaritsa, even if he's been helping her on it. And she would like to learn a little more about these Knights of Favonius from someone who doesn't have so obvious a grudge. It seems somehow appropriate to do so in pursuit of an Anemoculus.

"All right," Lumine says. "You can help."

As Lumine turns back towards the gaping black shadow of the doorway, she hears Amber cheer behind her. "Awesome! I can't wait to show you Baron Bunny."

***

Baron Bunny is a giant plush, it turns out. It explodes, which is a bit unexpected, but after the brief surprise of it in the first fight Lumine quickly gets used to it. Amber isn't nearly as strong a fighter as Diluc, though she also has a Pyro Vision, but just the presence of her flaring heat in battle seems to make the Melt effect that Lumine has gotten used to setting up with Diluc more effective. Overall, she's a much better party member than Diluc's reaction had led Lumine to expect.

A quarter of the way up the tower, they run into what seems to be a dead end. Lumine stands at the bottom of a cavernous space, made more so by the lingering edges of floors and walls that have crumbled away above. Even if she stands on the highest of the broken pillars, the next partially-intact floor is dozens of feet over her head. There's a lift mechanism in the corner, but it lies dormant and still.

"Those torches," Diluc says, holding his flaming claymore high to light the space. "That sort are usually connected to the mechanisms in these ruins. If I can reach them, I can light them and see what they'll do. It's getting there that's the problem."

Lumine looks around and sees what he means. The tilting and crumbling of the tower have put most of them in nearly-unaccessible spots. That one he might be able to reach by jumping off this pillar if she jumps far enough, and if he can squeeze through that rubble there one is half-buried behind it... but the ones higher on the walls will be harder to reach. Her Cryo constructs melt so quickly under Diluc's feet. The two that, due to the tilt of the tower, are practically on the ceiling? She has no idea about those.

"Oh, is that all? Leave it to me," Amber chirps from the base of the pillar. Lumine crouches down and watches her unsling her bow. She takes careful aim at each of the torches, the ends of her arrows bursting into flame, and lights each of them with one shot, even the half-buried one that Lumine wouldn't have thought she could reach.

"Thank you," Lumine says, smiling at her, as the lift jerks to life and begins to slowly grind its way up the wall. "We couldn't have done that without you."

"Glad to help." Amber assures her, dashing up the slant of the wall towards the lift. "Last one up is a rotten egg!"

Lumine jumps off the pillar to hit the wall right behind her. As she scrambles up onto the lift she sees Diluc uncross his arms, brace himself, and leap to follow.

***

They make it most of the rest of the way up before they reach another such space, this one with great crumbled gaps in the outer walls as well. No lift or torches are apparent this time. The cold winds from outside the tower rip through the sides of the tower, leaving piled-up drifts of snow behind. Lumine, Diluc, and Amber crouch in the lowest corner, Paimon floating low and using Lumine as a windbreak.

"Those are blowing harder than I'd have thought from looking outside," Diluc says. "There must be Anemo energy leaking down from above."

"I bet we could get up there using those winds," Amber says, eyeing the roaring flurries overhead in speculation.

"With the winds?" Lumine asks.

"Yeah, using our wind gliders!" Amber reaches back and pats the narrow wood-and-metal box on her back that Lumine had thought was some kind of travel case. "Sir Diluc, haven't you shown Lumine how to glide yet?"

"We haven't been in a large enough town to find one for sale. Or to get mine repaired," he says expressionlessly.

"What, your wind glider is broken? Let me take a look at it," Amber begs, reaching out towards him like she wants to grab for something. "I bet I can fix it. And I have a spare with me I could lend to Lumine, so we can show her how to glide! You know there won't be a better way up."

Diluc stares at her for a moment more, calculating, then reaches into his travel pack and pulls out another such case and holds it out. Amber snatches it from him with a squeal of excitement. "The left wing won't extend fully," he tells her as she flips it over and starts undoing catches on the back.

"Oh, that's because your pivot gears are bent. This will take me a few minutes, so maybe we should sit down and rest while I fix it? I haven't eaten in ages."

"A lunch break sounds like a *great* idea!" Paimon seconds enthusiastically. "Lumine, do you have more of that cabbage-potato borscht?"

"No, I'm all out," Lumine says regretfully to Paimon. Her stomach rumbles at the memory of the delicious soup. "Diluc, what about you?"

"I have potatoes."

"Nothing else?"

"Potatoes are a complete meal on their own."

"Not without butter and cream," Amber protests, looking up from the articulating wing made of metal joins and wooden feathers that she's stretched out over her knees. "I did some hunting earlier, and I still have plenty of meat, plus some cheese. You could make a pile-'em-up! You were always really good at that one."

"Oh!" Paimon comes zooming up to hover level with Diluc's face, bobbing in the air in front of him. "Juicy meat and melty cheese and potatoes! That sounds perfect to Paimon!"

Diluc bats irritably at Paimon until she drifts further away. "It won't be the same without lamp grass for seasoning."

"True," Amber says. "I guess I could make my signature Outrider's champion steak when I'm done fixing your wind glider."

"...I'll make a pile-'em-up without the lamp grass."

***

The Hydro Abyss Mage, shell frozen by Lumine's Cryo and melted into nothingness by Diluc's phoenix and Amber's arrows, tumbles squealing to the floor. Diluc lunges forward and drops down on top of it, pinning it beneath his knees, one hand on its shoulder, the other holding his claymore across its throat.

"The key to the pillar," he snaps at it. "How do we get it open?"

"Like I'm going to tell you," the Abyss Mage chitters, its voice high and cracking and full of vicious glee. "You'll never get through- aaah! That hurts!"

Diluc lets the flame die. "Tell us, or it's going to hurt a lot more."

"Favonians who can't even figure out the order of the elemental monuments on your own- aaah! Ow! Okay! The first, third and fifth have to be lit at the same time, while the other two are left alone, or they all go out! Aaaaah, I'm not lying!"

With a jerk of his claymore, Diluc slices through the Abyss Mage's neck, and it dissolves into powdery black smoke. Then he rises and turns to study the elemental monuments arranged around the pillar in which the Anemoculus is said to be encased. The way they're set, she can tell his phoenix can't hit all three at once without lighting the two in between.

"You could get those two," Lumine suggests, pointing to the two on the end. The curving way the monuments have been arranged in front of the pillar means that there's a straight line between them that wouldn't touch the others. "And Amber can shoot the third at the same time."

"Sounds like a plan to me!" Amber pulls an arrow from her bow and sets it to the string, looking at Lumine with a smile. "Just give me a signal."

"Fine," Diluc says shortly, and walks to where he needs to stand to line up the phoenix. He, too, looks at Lumine for a signal.

Lumine takes a couple of steps back, just in case, and raises a hand. "Fire!" she calls, snapping it down.

Amber's arrow flies and flashes, the phoenix blazes forward, and the three monuments light up, Pyro sigils shining above them as veins of elemental energy run glowing down them like lava down a volcano's side. There's a click from the pillar, then a grinding of stone, and a portion of the front slides away. The Anemoculus--a blue-green orb framed with irregular, feathery wing-like protrusions, with a more stylized wing-like symbol shining from within the orb--rotates slowly within. She can feel the Anemo energy radiating off of it, generating a cool breeze that flows through the room.

Slowly, entranced by the beauty of the elemental object, Lumine starts forward. She reaches a hand out towards it as she passes the monument that Amber had lit.

But Amber is faster. She dashes forward and thrusts her hand into the pillar, snatching the Anemoculus from its prison. As she turns about, Lumine unthinkingly reaches towards her, expecting to be handed it. Amber just pulls her goggles down and bounces backwards, using the tilt of the floor to speed her movement.

"Sorry, Lumine. I wish I didn't have to do this, you seem really nice. But Sir Kaeya says Master Jean needs these, and even if he's too lazy to get them himself, I can't let you have one. I really hope I didn't mess things up for you too much. Good luck finding your brother! Sir Diluc, I'll tell everyone you said hi!"

As Diluc lunges for her, face twisted in fury, hands outstretched, she flings herself through the arching, open window behind her and into the freezing winds below. Amber twists about in the air, clutching the Anemoculus to her chest with one hand and pulling the string on her wind glider with the other. Wings snap out behind her and she catches the wind, soaring away and down with expert speed.

"After her!" Lumine shouts at Diluc, charging towards the same window, reaching for the release of the glider Amber had told her to keep as she goes. She can hear his feet on the floor behind her. Paimon, wailing in alarm, grabs Lumine's arm and clutches on tight as they launch.

The winds battering at her out here are entirely different from those they'd flown on in the tower. While they aren't as strong, they also aren't nearly as directed. With only her minimal experience, Lumine can't manage to steer herself after Amber, who is dwindling into a spiraling red-brown dot in the distance. Diluc has more experience with wind gliders, but he seems to be having just as much trouble--no, more, one wing, the supposedly fixed wing, stiff and unmoving even when the other one flexes. He's caught by a particularly strong buffet and tumbles as something in the unmoving wing, unable to flex, instead snaps.

With Amber already out of reach, Lumine turns and dives as best she can after Diluc instead. He doesn't fall at deadly speed, but it's still a good clip, and he hits the ground below with a crash sufficient to throw up snow in a blinding cloud all around. Lumine wipes it from her eyes as she lands, then wades through the waist-deep drifts until she finds Diluc fumbling out of them, snow turning to water wherever he's touched and then freezing right back into ice.

All around them, the wind is still swirling, carrying even more snow than before. Lumine looks up at the slate-grey sky that's all she's ever seen in Snezhnaya, searching for a darker blotch. "I think a blizzard may be coming on...."

"It's no blizzard." Finally making it to his feet and dusting off the worst of his snow from his clothes and hair, Diluc reaches again for his claymore as he peers out into the blinding flurries all around. This time he draws it, holding it in front of him, a thin line of flame dancing along the blade. "It's worse."

"What's worse?" Paimon asks, slowly letting go of Lumine's arm and floating up to peer over her shoulder.

Out of the white wall of snow, a figure appears, striding confidently towards them. A tall woman, clad in black and white with a blue cape swirling behind. Lumine is shivering in this even deeper chill, but she seems entirely untroubled. She's carrying a claymore that looks like it's been carved out of ice, held high and ready to swing, the flat resting on her shoulder.

"Diluc Ragnvindr," she says, staring haughtily at Diluc. Somehow the tilt of her chin makes it seem like she's looking down at him, even though he's the same height or taller. "How annoying."

"Sir Eula?" Lumine guesses, glancing at Diluc and then back at her.

"Yes. Sir Eula Lawrence, Captain of the Reconnaissance Company, and Fourth Harbinger of the Knights of Favonius, to be precise." She turns that disdainful look on Lumine. "Amber tells me you're... *nice*... so I will not take vengeance on this traitor here and now, in circumstances where you may get in the way. But if you threaten Amber or our mission, I will not hesitate to turn my blade upon you."

Lumine tenses, reaching for her sword, but Diluc reaches out and puts a hand on her shoulder. It's warm on Lumine's bare skin even through his still-wet glove. "This isn't the place to fight her," he says, low-voiced, frustration audible through his gritted teeth. "Report back to the Tsaritsa, and we'll work out our plan from there."

"Wise of you," Eula says. She stands there, claymore on her shoulder, not moving an inch, as she watches them walk away.