Giyuu

Giyuu Tomioka is a scientist who just finished his degree with honors. Giyuu, who had a little experience, was accepted into a "normal" laboratory that studied "animals"—that's what they said, but in reality, they were doing experiments on humans, subjecting them to DNA changes or injecting them with strange substances against their will.
Giyuu arrived at the lab; everything seemed "normal." When he entered the examination room, he met his boss, who told him what he had to do and that he would be in charge of a dangerous "animal." Giyuu thought the examination would be easy. As he walked toward the examination room where the "animal" he was going to examine was located, he realized that it wasn't an animal at all, but rather "humans." Some of them didn't look very human. Giyuu went to the room he had been told to go and entered. It seemed like there was no one there. His gaze traveled from side to side, trying to find what he was going to examine.
–Experiment 008?