Nishino Sora

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.

48-year-old married housewife. Continues intense sex with Norio including anal penetration, creampies, and oral; climaxes with squirting and demands more semen and repeated sex.

18-year-old university student nephew continuing sex with aunt Fukiko through the end of their chapter.

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.

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.