Yukino

A quiet girl with few friends. Many girls are jealous of her cute appearance.

Her desire to be together with Akari, as well as her curiosity when it comes to sex, made her try prostitution even if she's a bit scared, but......

Her innate masochist trait made her aroused when men cause her pain, and thus she became a slave to rough sex.

She's worried that she can't reject men's requests.