Saibara

Shoulder-length light hair, large breasts, casual home clothes; sees Daiichi and Chloe together on the sofa and remarks they get along, then dryly comments on them in bed.

Long light-haired married woman who aggressively rides Atsuki bareback, allows creampie, then leaves before morning and chats online as siwori.

Short-black-haired stepbrother with glasses. Has intense sex with Suzu, creampies her, then leaves for school in uniform the next morning.

Long light/silver-blonde hair with clips, large breasts, golden pubic hair; fully nude during intense cowgirl sex with cousin Daiichi, then lace lingerie; sexually forward exchange student who demands creampie and asks if he loves her.

Male university night part-timer who argues with manager Kurokawa at the register about their hotel encounter while a customer waits.

Kind female convenience-store manager who tells a male university part-timer he can leave early and that she will handle the inventory.