Ruka

Male PE teacher who checks on Asahina, is pulled into kissing and explicit sex with her in the student council room despite protests, then collapses exhausted after creampie.

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.

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

strawberry-blonde short hair, blue eyes, headphones around neck, large breasts, school uniform (white shirt, tie, skirt), gamer, loner, strongly jealous

Senior with short light hair and school uniform who greets Haruka in the final pages

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