Nurse Ki, a young married woman who wears glasses, is assigned to care for patient Otomachi, who has an abnormally large penis and is hospitalized at Banaba Hospital. Despite being accustomed to male genitals due to her profession, Ki's heart races when she sees Otomachi's enormous member. One night, while making rounds, Ki catches Otomachi masturbating with his inconvenient hands. 'I'm so horny I can't sleep,' Otomachi confesses to Ki, who then helps him masturbate…
