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.

In keeping with the original Japanese format, this book reads from back to front and from right to left.