Kayano Aki

A second-year high school student and the ace of her school's volleyball team. Due to growing up in a family with only male siblings, Aki is quite a tomboy and considered very prince-like between the girls in her school. She admires her good friend Matsuri and in fact wishes to be as girly as her.

One day she witnesses Matsuri participating in compensated dating. Because she cannot understand her emotions nor the reason she's doing it, Aki decides to also participate in order to find out...