A mother who enjoys teasing is a master of braking; she treats her son like a sex pet, controlling his ejaculation during intercourse. (Yuko Shiraki, VENX-180)

Yuko's sexual desire only intensified with age; she was a wanton wife who felt unsatisfied with sex only with her husband. She also craved arousal, and her technique, though only superficially skillful, was undeniably impressive. One day, she smelled the stench of semen from the tissue her son, Kazuya, had used for masturbation, and the switch was flipped. Losing her rationality, Yuko contemplated turning her beloved son into a sexually exploitative pet…