Kokuin

Akatsuki Kouya is a genius medical student who doesn’t believe in people and tries to distance himself from them. However, he is tricked and imprisoned by Katase Eiichi, a professor who was attracted to his charm. One month after Kouya’s disappearance, Kisaragi Rei, the only one of Kouya’s team members who was worried about his disappearance, comes to his rescue. But the one who has become a tool in his professor’s human experiment is…!