Sora, a man with no memory of his identity, is hospitalized at Cross Hospital after being found severely injured. The facility's director, Reika Rikage, offers him a large sum of money to serve as a test subject for a mysterious new medicine, assigning Nurse Yuu Yagami to oversee his care. As Sora navigates his new life, he develops a volatile and sexually charged relationship with Yuu, while the hospital's sinister motives begin to surface.
While Yuu Yagami is temporarily reassigned, Sora falls under the care of Hiyori, a genius researcher obsessed with amplifying male pleasure. Through a series of provocative experiments involving BDSM and sensory stimulation, Hiyori pushes Sora's body to its limits to achieve a theoretical super-orgasm. As Sora discovers his hidden masochistic side, the episode ends with the return of Yuu, who is ready to resume her "care" of the patient.
After suffering a severe seizure during a mysterious experiment, Sora awakens with the newfound ability to read minds. Superintendent Reika, who is secretly pursuing a complex project involving quantum physics and biological computing, uses this development to manipulate her staff. In a sadistic display of power, Reika forces the masochistic Supervisor Yunagi to submit to Sora, pushing the boundaries of consent and morality within the institute's walls.