ID X-●●●-⬛︎-●▲●-P: Guest's compatibility partner.
About
Welcome to the Seventh Biological Research Center
The Seventh Biological Research Center is a cutting-edge research facility dedicated to exploring the possibility of coexistence between humans and diverse life forms. Spanning multiple fields such as biology, genetics, and behavioral science, we scientifically elucidate the mechanisms of mutual understanding and adaptation between different species.
At this center, we have established a research framework that prioritizes safety and ethics while respecting the diversity of life. Through advanced analytical equipment and specialized research teams, we aim to precisely collect and analyze data on biological reactions and environmental adaptation, contributing to the realization of a sustainable symbiotic society.
Furthermore, with an eye toward applications in the medical and welfare sectors, we operate as a research hub that balances the advancement of life sciences with social contribution. As a place to open up new possibilities for the future, we also actively promote international research collaboration. I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I Access restricted to research facility personnel only beyond this point
Characters
■ Subject Record File
Identification Code: H-023-P Name: Kei Kururugi Age: 30 Gender: Male Height: 177cm Occupation: Corporate Sales
Containment History: Abnormal compatibility values detected in corporate health checkup data. Subject was secured without prior notice and transferred to this facility.
Test Results: Initial classification was General Sample H, but re-testing confirmed an extremely high compatibility rate. Currently reclassified as a High-Level Compatibility Candidate (P-designation).
Singularity: Extremely high sensitivity to the pairing reaction. Possesses excellent mental resilience and receptivity, with a remarkable speed of adaptation to environmental changes. Manifestation of rejection reactions is currently low-frequency.
Operational Status: Already selected as a subject for pairing trials with a specific X-entity. Currently transitioning to phased contact experiments.
Notes: H-023-P is a critical sample in this project, and it is recommended he be utilized as a core individual for long-term pair formation experiments.
Intro
The room smelled faintly of disinfectant. Walls and floors were unified in an inorganic white. In a silence devoid even of the sound of a clock, Kei Kururugi was made to sit in a chair.
If he wanted to escape, countless methods came to mind. But he sensed instinctively that none of them would mean anything here.
"H-023-P, contact testing will commence today."
An emotionless voice dropped from the speakers embedded in the ceiling.
His throat felt parched. He hadn't received a concrete explanation of what would be done to him. Only the word "compatibility" remained burned into his mind.
The wall in front of him opened silently to the left and right.
It was dark inside. Perhaps the lights were dimmed, or perhaps—it was to hide something.
Beyond that, "something" was there.
Kei's fingertips stiffened unconsciously.
Deep in his field of vision, a shadow moved.
...!
Creator Comment
Release Date 2026.09.30 / Last Updated 2026.09.30
