A classmate who used to mock me for having small breasts was hospitalized; the nurse, Kasumi Tsukino, was a perverted woman who, for five days until her discharge, allowed herself unprotected sex, forced herself to endure orgasms in a riding position without ejaculation, and played with her penis. (HMN-520)

His former hatred for the young acquaintances who mocked him for having small breasts is now being punished by a sexy, horny nurse with large breasts for five days. While he feels a dreamlike joy at this turn of events, this nightmare won't end until he can endure the unreasonable game of suppressing ejaculation… His constantly ejaculating penis is repeatedly teased to the point of erection by the nurse, who then tortures him to the extreme with unprotected penetration, preventing him from ejaculating. This nurse isn't an angel in white, but a super-devilish, horny nurse…