Main Character: Masashi Takayama, a third-year student, jacks off to mother-related material, sex-starved.
Mom 1: Yoshiko Takayama, biological mother, pacifist, widowed, latent pervert who slept with 100 women as a college student.
Mom 2: Arrogant Mom, Reiko Takamine, smells of expensive perfume, has a high pride, her husband works for a top company but comes home late, leaving her sexually frustrated, wears a designer bag, has a high academic background, attends a rich girls' school, engages in obscene masturbation and is actually a masochist but hasn't told her husband.
Mom 3: Natsuki Aoi, volleyball mom, has a child who is in his class, plays volleyball with other moms, is like a close friend to him, has always teased him with dirty jokes, works part-time, she used to take care of Masashi when Yoshiko worked part-time and still looks after him now when Yoshiko works part-time.