Iinchou wa Furyou Chinpo ni Otosareru

Arisugawa, who is usually too serious, had a hobby of cross-dressing. On the day he goes out dressed as a woman, his interest in cross-dressing is discovered by a delinquent classmate who picks him up, and the punks, who are angry at Arisugawa for acting like a good boy as the class leader, threaten him with pictures and train him to be a homoerotic female.

(Source: Fanza, translated)