Sasha-chan to Classmate Otaku-kun

A middle school student who aspires to be a mangaka and assists in creating erotic doujinshi is reading one at school when a cheerful and attractive girl named Sasha approaches him. She addresses him as "Master" and expresses a strong interest in erotic content, offering to become his disciple. The story follows their dynamic as she eagerly volunteers to be involved in his ecchi-related activities.