Kenichi

23-year-old freeter. Meets Sena at the gym, becomes her sex partner, and after she divorces her husband marries her and has a child with her. He continues their relationship while lusting after her body.

29-year-old glasses-wearing married neighbor. With husband on a trip and child at her parents, she visits Hine at night with leftover dinner, seduces him braless, then kisses, fellates, has vaginal sex and takes a creampie. Their affair continues; after husband and daughter leave she lifts her skirt, shows semen dripping from her crotch, and invites him again.

25-year-old factory senior coworker with glasses; married to Fumina; lends his wife to junior Namino for sex, watches from outside the room, then joins a threesome including anal and vaginal sex until late night.

20yo university student with short hair, large breasts and ass. Has a boyfriend but cannot resist Bunzo's large penis, strips for first sex, rides cowgirl feeling uterine pressure, has a condom put on just before ejaculation, and joins group and next-day all-night sex.

College student and Kenichi's friend. Has first vaginal penetration, breast play and creampie with Taeko, then is held back when he tries to leave.

38-year-old married apartment landlady. After years of a sexless marriage she cheats with other men; when tenant Goro catches her she offers sex for his silence and becomes his partner. She repeatedly takes creampies, visits daily, and joins a gangbang with Goro's friends.