When the Kuno siblings get into a squabble over destroyed pictures of each other's love interests, it ignites a sibling battle that engulfs the school.

When Hikaru Gosunkugi meets Kogane Musashi for the first time, he instantly falls in love with her, later shamefully learning that she is a ghost. Furthermore, Kogane is forced to return to the underworld by midnight, leaving Gosunkugi heartbroken.