Rumors of the supernatural "Seven Mysteries" are sweeping Kamome Academy. One of these mysteries is the legend of Hanako-san, the ghost of a young girl who haunts the girls' bathroom on the third floor of the old school building. In fact, the ghost is said to grant any wish its summoner desires. High school freshman Nene Yashiro boldly summons Hanako in desperate need of love, but the Hanako who appears before her is a boy!
After Hanako-kun claims he can't give her what she wants, Nene tries various ways to make her crush notice her. With her desperation reaching its peak, she puts her life in danger and forces Hanako-kun to save her, forever linking their fates. Now entangled in the supernatural realm, Nene slowly discovers that there are many more mysteries than the simple rumors of the school.
