Nell, who tried to enter a prestigious girls' school while hiding the fact that she was a crossdresser, ends up being discovered during a physical examination by the health teacher. Forced into a vulnerable position, she is subjected to SM training tools. Her nipples are enlarged like a woman's with a nipple sucker. Despite being punished, her penis becomes erect, leading to accusations that she isn't truly repentant. She is made to spread her legs wide over a commode and has her anus stretched with a thick dildo. This perverted boy, who orgasms repeatedly, is deemed a masochist and is turned into a sexual toilet for the teachers!