The floor trembled behind them with each step of the Reconstruction Unit sending violent shockwaves through the rusted understructure of the Archive.
Nero didn't dare look back. His lungs burned as if lined with fire while his legs screamed in protest, and yet he kept running, kept pushing forward, because Helia's hand was still wrapped tightly around his.
And somehow, impossibly, that was enough.
Sparks cascaded from fractured ceiling panels and showered the corridor in brief flashes of white and orange. The dim amber emergency lights flickered like dying fireflies and struggled to stay alive as the Archive rearranged itself in subtle, hostile ways. Every corridor blurred into the next with twisted pipes, dangling cables, and half-collapsed support beams, but Nero didn't slow. He moved by instinct alone and was guided by the faint pull of Veyra beneath his skin.
Left. Down. Slide under the broken arch.
He didn't think. He knew.
"Up ahead!" Helia shouted, her voice cutting through the chaos as she pointed toward a half-open bulkhead door at the end of the passage. "Transit shafts! If we reach them, we can lose it!"
They sprinted toward it just as the Unit's massive metal claws slammed into the wall behind them and carved a deep trench through steel as if it were soft clay. The impact sent another tremor through the corridor.
Nero reached the door first and ducked inside while dragging Helia with him. The bulkhead motor stuttered violently as they crossed the threshold with sparks bursting from its exposed wiring.
"Come on, come on!" Helia kicked the door frame with all her strength.
With a grinding shriek, the bulkhead slammed shut.
A heartbeat later, the Reconstruction Unit crashed into it.
The entire wall warped inward with a deafening clang as the metal bowed under the force. Nero staggered backward on shaking legs and stared at the dented surface, half-expecting it to rip open at any second.
But it didn't. For now.
Helia leaned back against the opposite wall with her chest rising and falling rapidly as she wiped sweat from her forehead. Her voice, when she spoke, was barely steady. "That wasn't supposed to happen."
Nero let out a broken cough that might have been a laugh. "Which part?"
"All of it."
They fell into silence while listening to the distant mechanical roar echo through the structure. Either the Unit had lost their signal, or it was recalculating and searching for another path.
Neither possibility brought comfort.
Nero slid down the wall until he was sitting on the cold floor with elbows resting on his knees as he tried to slow his breathing. Helia joined him a moment later, close enough that their shoulders almost touched yet still leaving a careful inch of space between them.
Even now. After everything.
He didn't blame her.
She had seen him lose control. She had seen the Archive react to him. She had seen the Reconstruction Unit stagger because of him.
Nero stared at his hands. They were still trembling with faint streaks of teal light glowing beneath the skin like dying embers.
"What was that?" he whispered.
Helia didn't answer immediately. She was watching him, not like someone watching a threat or a monster but like someone staring at a puzzle they were afraid to solve.
"You focused it," she said at last. "You didn't let it tear you apart. You directed it. You used it."
Nero swallowed. "I didn't know I could."
"You weren't supposed to." Her jaw tightened. "Veyra isn't meant to obey intention. It reacts to instability, fear, or stress."
"But it did."
"I know."
There was something unspoken in her voice, something between awe and dread. A warning she didn't yet know how to articulate.
For a while, neither of them spoke. The sound of machinery vibrated faintly beneath the grated floor while a cold draft swept through the passage like a reminder that the Archive was still alive and still shifting around them whether they wanted it to or not.
Finally, Helia sighed and rubbed her forehead.
"Listen, about back there," she said carefully. "You scared me."
Nero looked up. "I didn't mean to—"
"No." She shook her head. "Not because of what you did. Because you didn't hesitate." Her voice softened and almost broke. "You risked yourself to protect me. You shouldn't have."
"Why not?" Nero asked quietly.
"Because you're the one they want," she said with frustration bleeding through her control. "You're the reason the Unit is hunting us. If something happens to you—" She stopped herself with her jaw clenching hard. "Then Prototype Eleven died for nothing. All of this would be for nothing."
Her eyes flicked toward the dented bulkhead.
"And because I don't want—" She cut herself off again with the words tangling somewhere between thought and breath. "Forget it."
But Nero didn't forget. He couldn't.
Something in her voice, something unfinished, settled deep in his chest. Instead of pressing, he said softly, "You saved me too."
Helia turned sharply. "What?"
"You pulled me out before the ceiling collapsed," he said while managing a small, tired smile. "If you hadn't been there, I'd be dead."
She stared at him, caught completely off guard. Her mouth opened and then closed. When she looked away again, the tips of her ears, barely visible beneath her hair, were faintly red.
"That was different."
"It wasn't," Nero replied gently.
A long breath slipped from her lips. When she finally looked back at him, her expression was calmer. Softer.
"Don't make this harder than it already is," she murmured.
"What's hard?" Nero asked.
"Keeping you alive," Helia said. Her voice cracked despite her effort to keep it steady. "Because the more you show, the more the Archive reacts. And the more dangerous this becomes. For both of us."
Nero didn't know how to answer that.
Another distant impact echoed through the structure. The Unit was still out there.
Helia stood immediately. "We need to move. Transit shafts are unstable, but staying here is worse."
Nero pushed himself to his feet. His legs wobbled and threatened to give out.
Helia caught his arm without thinking.
As soon as he steadied, she let go, almost too quickly.
"Thanks," he murmured.
"Don't get used to it," she muttered.
Her tone was sharp. Her expression wasn't.
Together, they moved toward the narrow stairway descending deeper into the Archive. The air grew colder with each step and filled with the faint whispers of shifting machinery and unseen systems adjusting themselves around them.
But for the first time since waking in this place, Nero didn't feel alone.
The space between them wasn't empty anymore.
And the Archive felt it too.
The lights flickered once. Twice.
Then steadied, like a long, measured exhale.
As if it were watching. As if it had noticed something new forming between them.
Something fragile. Something dangerous. Something the Architect would not allow.
And somewhere deep within the metal veins of the structure, a mechanical voice echoed softly:
"PROTOTYPE TWELVE: BOND INSTABILITY DETECTED."
Helia froze and Nero's blood ran cold.
The Archive was reacting on its own again.