Kawada Fukiko

25-year-old wife of Hirata Gaku; large breasts and huge buttocks; appears demure but is a nymphomaniac who performs fellatio, vaginal sex, creampie and double penetration with junior Namino and her husband, then invites Namino back for partner exchange.

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.

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.

Office worker living next door to Kaede. After embarrassing himself in front of her he drinks alone at night, then receives her visit and has kissing, fellatio, vaginal sex and creampie with her. Their affair continues afterward.

20yo lounge/massage-parlor worker with dark hair and large breasts. Presses her breasts on Bunzo, performs fellatio and deep fellatio, takes a heavy facial and oral cumshot, and continues group and next-day all-night sex with Rin and Sora.

20-year-old factory junior worker with no girlfriend; is offered senior Gaku's wife Fumina, has oral and vaginal sex with creampie, then a threesome until midnight and is invited back for partner swapping.