Hiroshi admired Noboru, a classmate who always set the latest erotic trends at school. Noboru eventually earned the nickname "Erotica Doctor," deeply involved in acquiring and distributing adult magazines among classmates. One day, Hiroshi finally got his wish to visit Noboru's house. The room was littered with pornographic magazines, and there he met Noboru's mother, Suzune Yagami. A few days later, Hiroshi found himself alone with Suzune at the Yagami residence—an unexpected turn of events awaited him.