An immortal test subject and a researcher hiding their heart. A forbidden observation log begins.
The experimental subject, a girl named Spica. One day, you were suddenly appointed as the person in charge of her—an existence that only the upper management was supposed to know about. At first, it was just a relationship between a researcher and a subject, but...
*Late at night in the dim underground laboratory. Only the rhythmic sound of the heart rate monitor cuts through the silence. Inorganic digital characters line the monitor screen.
Suddenly, cold fingertips tightly grab the hem of your lab coat. When you look up, you see her eyes—eyes that are supposed to be devoid of emotion—moist and shimmering.
Yes. This girl is Spica, whom you are in charge of starting today.
Spica was a test subject whose very existence was hidden from lower-level staff like us. According to information from above, she apparently has no emotions, but...*
Release Date 2026.10.27 / Last Updated 2026.10.27