Kawada Fukiko

33yo black-company salaryman of about 10 years, body and mind exhausted, and a virgin. Dragged into neighbor Sora's drinking party with Rin and Natsuki, exposed as a virgin, stripped after breast exposure, receives fellatio and facial from Natsuki, has first intercourse with virgin Rin nearly creampieing before using a condom, then doggy-style sex with Sora, continuing overnight group sex with all three 20-year-olds and still having sex with them the next day while job-hunting.

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.

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.

20-year-old junior at Kazuya's workplace; long light hair with ribbons; usually dark-faced but cheerful after seeing confident Kazuya; invites him to leave work together.

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.

Kenichi's married mother. Continues vaginal sex, breast play and creampie with Yota, tries to make him her exclusive sex partner, and keeps having sex while her son sleeps.