Minami, who once admired her senior in school, is easily captured and taken to a female-body transformation torture research facility. While constantly shouting "I'm not feeling anything!!" during the staff's torment, her cock grows harder and harder. Maintaining a defiant attitude throughout, her body trembles uncontrollably, clearly reacting with extreme sensitivity. Ultimately pushed beyond her limits, she repeatedly screams "I'm going crazy! I'm going insane!!" climaxing over and over in perfect sync with her cries, creating an intensely erotic sequence of events.