PE Teacher

Convenience-store manager who, on the shop floor, angrily rebukes her night part-timer over their prior hotel sex and who started the affair first.

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

Long black hair, large breasts, wearing school uniform, frequently appears in sexual scenes

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

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