Amadano Kokone

21-year-old university student living alone in Satsuki's apartment who admires her. After witnessing her affair he becomes her sex partner the next day, continues creampie sex and daily visits, then invites friends for a gangbang party.

24-year-old office worker with large breasts; Kazuya's elementary-school classmate who liked him since childhood; former tomboy who lacked confidence as a girl; virgin who invites Kazuya home, strips to lingerie, performs fellatio, has missionary and doggy vaginal sex, orgasms, and receives a creampie.

38yo convenience-store manager and Suzu's husband. Sleeps snoring face-down at the table and remains asleep through his wife's affair and daytime seduction of Yamada.

20yo clothing-store worker, blonde with large breasts. Newly moved next door, throws loud drinking parties, wakes Bunzo, apologizes and drags him to the party. Calls herself the lewdest of the three, spreads her vagina waiting for his penis, takes doggy-style penetration, climaxes forgetting work and seniors, and joins overnight group sex.

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.

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.