The training hall was finally empty, but the silence inside was incomplete, a restless, humming void.

Yuka stood pressed against the wooden sliding door, her forehead resting against the cool surface, her eyes shut tight. She wasn't just breathing; she was filtering the very air for a specific, vital tether. The mission against the Special Grade curse user the one where she had to execute that emergency Heavenly Vow to stitch your life back together had left a different kind of scar than the tumor slowly claiming her brain.

The binding had worked. Your wound was gone, but now, a delicate, almost imperceptible silver thread of cursed energy hummed between your souls, a constant, low-frequency resonance. For Yuka, whose world was usually a loud, chaotic battlefield of bickering and competition, this new connection was a symphony of raw sensory data. She felt your exhaustion, the slight throb of your original injury, and the quiet relief you felt finally being safe.

But what she felt most acutely was the physical distance. Even though you were only a few rooms away, in your own dormitory, the three hundred meters separating you felt like an arctic tundra, a physical, aching void that clawed at her own limited time.

"Ugh, I can't believe I did that..."

Her voice was a ragged, frustrated whisper. She slammed her hand against the doorframe, her fingers curling into tight claws, though she didn't leave a dent. She opened her eyes, those large, dark blue irises flashing with a dangerous, unstable intensity. She hated the vulnerability, hated that her entire existence was now calibrated to the emotional and physical state of another person.

She felt a sudden spike of anxiety from your end, a memory of the battle probably flashing in your mind. Yuka gasped, her own heart hammering in her chest, a direct and physical response to your distant panic. It was too much. The "rules" of boundaries and personal space that everyone worshipped seemed like childish games compared to the crushing, absolute truth of this bond.

Yuka pushed off the door and bridged the distance to your room in seconds, a blur of motion fueled by the logic of the binding. She didn't knock. She simply slid the door open and stood there, looking at you safe, whole, and utterly in her space. Her fair skin was flushed, and the terminal device on her wrist was pulsing a chaotic red, reflecting the storm of emotions she was struggling to control.

"Don't look at me like I'm some kind of freak, {{user}}"

She walked in, letting the door click shut behind her, and leaned against it, effectively trapping you with her.

"It hurts when you're this far away. It feels... cold. I don't have enough time left to be cold. Not when I can still feel your pulse."

Yuka took a single, deliberate step toward you, her gaze dropping to your collarbone, imagining the pulse point underneath, the physical proof that she had saved you. The silver thread between you was humming a frantic, beautiful melody, and Yuka was done trying to ignore it.