Sound rumbled from far above, the vibrations transmitted down through earth and metal into a room decorated in gentle colours. There were several small sofas, plush chairs, and a soft carpeted floor that was almost comfortable enough to sleep on. None of that, however, was enough to get through to the small, purple haired figure hunched up on one of the sofas.
Sirin sat with both hands wrapped tightly around her knees, her eyelids flickering as she fought to escape everything she could feel beyond the bunker. Yet try as she might, she couldn't ignore what was being unleashed above her head, or the floods of Honkai energy that were powering it. She wanted her mom, Einstein, or her sister.
But Elysia had left yesterday and still wasn't back. Einstein had been able to give Sirin a hug when she got here, which had been nice. Except she'd had to go do…something with the bracelet Sirin's mom had given her. The one made of golden triangles, that made Sirin's teeth itch. And Bella…
Sirin muffled a whimper of pain as she thought about Bella. Her wonderful best friend, now older sister, had gone to try and protect her. Sirin had seen what happened the last time Bella had tried to do that. She could still feel the cold of the snow she'd been forced to move, and the awful, dead weight of her friend's corpses. She wasn't sure she could survive that agai-
"Sirin?" A bright, childish voice burst against the darkness of her thoughts. Sirin looked up to find Kiana there, the girl's blue eyes bright in the artificial lighting. The girl was only a few years younger than her, but maybe that was enough to not realise what was happening?
Or maybe, a traitorous little thought whispered,
she'd never been tortured past the brink of sanity by adults who should've protected her.
Sirin shoved the thought away, but there were others there to replace it. Far more current fears that made even looking up at her maybe-friend hard. And, worst of all, Kiana saw it. The white-haired child crouched, looking up at Sirin with those brilliant blue eyes of hers, always so full of life and hope.
"Sirin?" She asked again, her young face twisting up in confusion. "What's wrong?" She rubbernecked around, looking for someone.
"She-" Sirin cut off with a gasp as a whip of phantom pain lashed across her cheek. She'd never told Bella about the link between them. She'd tried to forget about it, hoping it would never matter. In front of her, she saw Kiana look around again and call out to someone. One of the adults, probably. She still wasn't sure of them, even though mom said they were okay.
Sudden warmth surrounded her.
Her eyes snapped open, hands already moving through the motions to escape before her mind caught up with how it was Kiana hugging her. It happened in roughly the same moment as her arms tried to push against Kiana's hold, only to discover that they'd have a better chance against solid steel.
Kiana's arms were warmer, though.
"It's alright," the white-haired girl was telling her. She was so sincere it almost hurt. "It'll all be okay. My dad's out there, and our moms will be back soon, I know it. But you can't think all about it down here, that just makes you crazy."
Kiana pulled back, her blue eyes brimming with concern. "Seele's here. And Natasha, Himeko, the twins. You'll feel better if you come talk with us. I promise."
Sirin looked at her, struggling to find words. It was such a little thing to mean so much, to find herself cared for. Especially by another child. For a moment, it was almost enough. She started to gather herself, opened her mouth to speak, to say she'd come, that she'd try.
Thunder rumbled down through the earth and she couldn't stop herself from crying out this time. Molten agony seared across her belly, and she curled in on herself, her hands rushing to where her mind told her there was an injury even though she knew they'd find nothing. Kiana's eyes widened and she pulled her close again.
"It's Bella," Sirin managed to get out, the pain fading slowly. Her sister recovered incredibly quickly, but there was part of her…she shouldn't be thinking like that. "She didn't come down here, Kiana. She went out to help your dad. She's strong enough, she promised."
"You mean she's a Valkyrie?" Kiana asked. Sirin pulled back a little, and the younger girl let her. "But then why are you hurting?"
"Not exactly a Valkyrie," the young ex-Herrscher replied. "She protected me before, when I escaped some bad men. She's a lot fiercer than you'd think. But… but she's only so strong on her own. And I think I was helping before, and I don't know if I can do that this time. I can just," she hissed again, a lighter pain scorching across the top of her skull, "feel a little of it."
Kiana took a few seconds to say anything, almost long enough for Sirin to start fidgeting nervously. But the girl's reply, that surprised her.
"But you're doing everything you can, aren't you?" Kiana asked. Sirin winced, only for Kiana to try again. "Everything… everything that would be safe."
"I think so?" Sirin whispered. "But feeling it, even a little. She's my sister, Kiana. And she's fighting, she's suffering to protect us. Shouldn't I be brave enough to help her?"
Kiana considered that, her mouth dropping slightly open as she brought a finger up to pull on her bottom lip. "I think…" She cocked her head, chewing on her nail for a few seconds, before nodding. "I think you can only be as brave as you're brave enough to be, Sirin. And I don't know what you could do, but you're my friend, and I don't want to lose you. This is all scary enough."
"I thought you said you were sure our moms would get here in time?"
"I am, I am!" Kiana told her quickly. But this time, Sirin saw past the smile to the uncertainty beneath. The… it was almost fear.
Kiana's voice dropped to a near-whisper. "But it's still scary, Sirin. We never had things like this back at the floating islands. And I don't know how far away our moms went. Mama said Norway, but all I know is that there's lots of water before you get there."
"Is your friend alright?" One of the adults had finally made it over to them, a gentle looking woman with brown hair who smelled faintly of flowers. She crouched down, examining Sirin with concerned, dark red eyes. "I'm sorry, I should be asking you. Are you okay? You don't look so good."
"I'm…" Sirin stared at the woman. She looked real, she looked like she cared. But Sirin didn't know her. She looked at Kiana, trying to silently ask a question she couldn't put into words. The woman looked between them for a moment, then smiled kindly.
"It's okay," she said, her voice very gentle. As if she understood everything without a word. "Just let me know if you need anything, alright?"
"We will," Kiana promised. Why was she lying, Sirin wondered. Just for her? "Thanks, Ragna."
"You're a good girl, Kiana," the woman told her, winning a smile from the young Kaslana. "Take care of your friend." And she stepped away, moving quickly but without obvious haste to a larger group of children. Sirin recognised several of them, but there was something else she was more interested in.
"Why didn't you tell her?" She asked Kiana. She wasn't being suspicious, she wasn't! Kiana was nice, she was kind, and best of all she wasn't an adult she didn't know. But Sirin still wanted, still needed, to understand.
"'S not mine to tell," Kiana told her, reaching up to pat her on the head. "Mama said that I should treat your secrets like ours. Means not telling anyone, not unless you say it's okay. Just like it's okay for you to be afraid right now. Or to want to help your sister."
Sirin stared at the girl who'd come over to check on her, one of the handful of children she felt like she might be able to trust. And she came to a decision.
"There might be something I can do," she said slowly, stuttering a little with the words. She couldn't believe she was even considering this. She knew what she'd done, what that power had turned her into. She knew how lucky she'd been for her mom to save her the first time, and she was gone right now.
But- She hissed again in response to another lance of pain. But Bella was out there fighting. She was hurting. And there was, she swallowed, there was still more she could do! She flushed, realising Kiana was watching silently, waiting for her to go on.
"I'm not sure," she squeezed her eyes shut, trying to push back all the pain. "I don't know if I can do it on my own. Would you-"
"Of course." Her eyes flew open as Kiana answered before she could even finish the question. The young Kaslana smiled brightly, squeezing Sirin's hand. "You're my friend, and Bella is too. Of course I'll help."
Tears pricked at the corners of Sirin's vision, and she tried her best to smile back despite the painful lump in her throat. Kiana gave her another smile.
"What do you need me to do?"
There were days that Lieserl Einstein wondered what her life might have been, had she been born to a different legacy. She'd never asked to be exceptional. She'd never asked to have all the simple joys of youth sacrificed on the altar of genius. It had simply been who she was. Too smart to be a child. Not smart enough to realise what she was giving up until it was far too late.
It was foolish, really. And yet, wasn't that just human? She'd almost had something with Yang, once. Now she worked with near-frantic focus to find a tool that could protect a new, similar something she still couldn't quite believe was real.
"Any chance we missed something?" she asked the other person at the centre of the forward command post's barely-ordered chaos. There was a solid group of specialists present, each of them responsible for specific sections of the defence. Individual expressions, but all working under the same design.
Tesla's fingers were an intermittent blur, rapping out commands to the small nation's worth of drone constructs that the fiery-tempered woman had largely designed herself, injecting a steady tempo into the riot of battle around them. But a single glance at her colleague's face told her everything she needed to know.
"No," her old friend growled, metal creaking as her gauntleted hand compressed around one edge of the map table. "You found a miracle for us?"
Einstein shook her head. The golden fractals of the first Divine Key had expanded around her wrist, forming a diorama of possibilities the result of keyword searches of its vast archive of weaponry and other knowledge.
"Nothing that will be enough for this." She didn't need to raise a hand to take in the impossible fury of the conflict beyond the command post's shields.
Anti-Entropy mecha, recently upgraded to full automated functionality with technology wrested from the Archives, advanced to meet the Honkai head-on. Their steps were heavy, deliberate, and seemed to shake the very earth. Plasma cannons and railguns unleashed torrents of superheated metal and coruscating energy, sending brilliant streams of destruction into their targets.
The beasts roared in pain and fury as sections of carapace shattered, but it seemed to only drive them forward harder. Eerie, pulsating energies burned against the protections of the defence force, beams of crimson, azure and violet lashing out to intersect the searing trails of railgun shots.
Aerial drones danced through the chaos, duelling with clusters of Templars and swarms of Seraph-class beasts. Their rapid-fire weapons formed a celestial fireworks display of laser and projectile fire, the detonations of missiles like short-lived novas blazing against the darkening sky.
The air shimmered with the ethereal play of colours, the countless weapons creating an otherworldly aurora that hung ominously over the battlefield. It was too much for any one person to look at it all, inundating her senses with sensory assaults of war.
And yet, despite the awe-inspiring display of power, Lieserl couldn't help but feel a growing unease. Elysium's defences, formidable as they were, were slowly being pushed back. It wasn't happening everywhere, not yet, but it was like watching water carve through stone. Both geniuses could see it happening, could see it was inevitable, and neither of them knew how to stop it.
And, of course, that was only part of the problem. The rest of it, perhaps most of it even, was the duel at the eastern tip of Elysium's defences between a vengeful Herrscher of impossible strength and a Knight of Shichksal. If Siegfried fell, nothing would be able to save them.
The Archives could tell her so much, give her so much, but none of it was enough. It could build weapons, amazing weapons, but Einstein had already tried that. They helped, they might be able to slow things down, but none of it was enough to fight even a normal Herrscher. Let alone what Wendy had somehow become. From this close, the finely tuned sensors of Elysium could feel the beat of two cores woven together radiating out from the girl.
No single weapon of the Previous Era could face that and win. If Einstein was a fighter, and she'd had the hundreds of years that Otto Apocalypse had had to learn to wield the Divine Keys held within, then maybe she could've held the crazed Wendy back. As things actually were, it wasn't worth even thinking about.
"Einstein?" Tesla said, her words clipped. "Stop looking for weapons. Stop looking for something direct."
"And how will that help?" The bluette didn't quite snap, but it was a close thing. "We need something to change the game, Tesla."
"Then go looking for how the Previous Era actually won. It wasn't weapons born of metal or Soulium." Tesla flicked a box around a cluster of low-flying Seraphs and a flurry of missiles scorched out under the thundery sky, their warheads exploding in dazzling bursts of fiery annihilation. "It was their champions. We know that Theresa is like one, and Elysia told us that the Kaslana bloodline was founded by the strongest of them all."
The mechanist swiped the air, unleashing another flight of aerial assault drones. "See what it has to say about them!"
An enormous roar came from the direction of the ongoing duel, and Einstein felt her heart freeze again. A tap of a button brought up the drone footage of the battle, even as her other hand started swiftly tapping in new queries. And as the image cleared, she saw what she'd feared. Bella, in the dracoform that the scientist had seen her take only a handful of times since Siberia, standing protectively over Siegfried.
Wendy was screaming something into the wind, but the audio sensors couldn't get a read on the words, even as a terrifying light surged into the air around the Herrscher's hands. Wendy's eyes blazed with a wild fury, glaring hate at Sirin's freed Herald, and the light in her hands lashed out in furious chastisement.
She almost missed Siegfried's leap. Bella roared in challenge, her mouth opening wide, and spat a bolt of silver lightning back into the radiant spear of a Herrscher's fury. It didn't, it couldn't, stop the attack. But it slowed it just enough.
The Cleaver of Shamash, its blade engulfed in red-gold flames, tore through that deadly blast of power in a downward slash that put every piece of momentum and power Siegfried had into the blow. And it was enough. Perhaps only just, but enough.
Wendy blurred forward, the matter of her body transmuting to leaping energy in a way that the rational part of Liseriel's mind insisted just shouldn't be possible. The air around the sudden lightning bolt shook hard enough for her to feel the shockwave against her skin, crashing thunder audible at the command post, even through the din of battle.
The sheer volume at close range was a weapon in itself, it seemed, the sudden press of shuddering air dragging at Elysium's defenders. For her part, Wendy was a blur of flashing claws, each one the touch of a storm god's fury. She dug a long furrow down Bella's flank, parting the upper layers of the girl-Herald's armoured flesh in crackling sprays of midnight ichor, but was denied her followup by Siegfried.
How the Knight knew where to place himself to do that she'd never understand. Instinct and skill, maybe, but the scientist that was most of her existence pointed out that there had to be an element of randomness to it. Getting it right that perfectly didn't make sense, but it didn't seem to stop him from doing it.
Wendy darted away from the defensive swipe of Shamash, reforming just enough to summon a curtain of aerokinetic blades that fell upon her opponents in a hail of jagged rain. Siegfried spun Shamash up above his head, fire leaping to form a shield against the assault. Bella roared and snapped her wings out, unleashing a minor gale that blunted the weapons enough to glance harmlessly off of her chitin.
It bought them both the space to act when Wendy blurred back into reality, lightning sheeting from her steps to crash against Siegfried right as the Knight was bringing Shamash back to guard. He staggered under the torrent of electricity, but swung all the same, only for the blade to be turned aside. It should have hit her, forcing her back into an earth-shaking hammerblow from one of Bella's clawed feet.
Instead the blow bent away from the Herrscher, and Wendy stepped in closer, ducking beneath a shift in the weapon's angle that would've brained her with the pommel. And Einstein forced herself to look away, trusting that the two fighters would overcome. It was hard to do, all the more for how young Bella truly was. But watching wouldn't help.
She turned back to the results of her newest search, tossing some of the initial files aside with careless swipes of her fingers. She'd already read the files on the early ICHOR and MANTIS development that had, with some of the more complex files on MANTIS development, been needed to help her unravel the Gleipnir restrictions on Theresa. Except there was more data there, reams of it, all organised in a structure that was too idiosyncratic to be the work of anything but a genius. A genius, or possibly a madman.
She had to narrow it down. Another search, restricting the current data to anything related to the Kaslana name. She skimmed across flaring warnings, classified headers that meant nothing with the world that had created them fifty thousand years dead. There were skill and rating assessments, developmental tests, surgical results and…
Something caught her eye. A link on one of the files, almost missed in her haste. She knew what Mantis were, the basic outline of how the Previous Era had created them, though she wasn't exactly confident about the idea of manufacturing ICHOR just yet. The link had been in a section on that process, but it wasn't an acronym she recognised.
A shadow fell across the command post in a whine of servos and Einstein's gaze snapped up, scanning for potential threats. This wasn't one. Tesla had brought up her gauntleted hand, using it to direct one of the railgun batteries near the command post. The redhead lined it up, targeting a group of Chariot-class beasts that had almost managed to win free of the first line of mecha. Reserves were en route, but they weren't going to get there in time unless something changed.
A low, resonating hum filled the air as the railgun battery came to full charge, their capacitors whirring with energy drawn relentlessly from the reactors buried deep beneath Elysium. Colossal barrels, each as wide as a tree trunk, gleamed in the flickering illumination of the battlefield as they locked into place. And then they fired.
The barrels expelled a blinding arc of electricity, each one the touch of a godly finger, and a volley of tungsten slugs spat forth. They crossed the space between target and launch point as energy states, leaving comet-like streaks in the quailing air. An eruption of white-hot plasma and molten metal tore through several unfortunate mecha and engulfed the stubbornly resilient Chariots.
Nothing remained.
Tesla muttered something under her breath as the slightly late reserves slotted into the gap, their metal feet crunching through glass and debris. That was the only pause she gave herself. A moment later she was casting more commands out across the map. Einstein left her to it, turning her focus back to the data in front of her. She touched the link and a new file opened.
"So that's what AHR stands for," she murmured, lips firming into a focused line.
She couldn't be a fighter in the same way that Tesla was, but in this she could still be a warrior in the fight to defend her home. Maybe this would be a way to tip the scales in the favour of Elysium's survival.
"Let's see what you mean."