X and Y meet a few suspicious characters during their travels that they may have to deal with later.

After that day, she stopped being a girl. In the wake of an assault, Nina Kamiyama, a former idol in the group Pure Club, shuns her femininity and starts dressing as a boy. At high school, she keeps to herself, but fellow student Hikaru Horiuchi realizes who she is. What secrets is she keeping? The shocking drama starts.