Married woman Hitomi Kano possesses an unusual sexual desire that cannot be satisfied by ordinary sex with her husband. She is a perverted wife who can only reach climax through anal stimulation, and the delivery man who discovers her secret exploits her weakness to seduce her. Though Hitomi resists at first, her frustrated anus gradually begins twitching with arousal. She is deeply stimulated using fingers, a pearl vibrator, and a double-penetration vibrator, until she is finally engulfed by waves of pleasure. This erotic progression forms the highlight of the work.