The hushed talks among Shinyo Academy's female students revolve around a mysterious supernatural creature. This monster is Boogiepop, a Shinigami who is said to murder people while they are at their most beautiful before their attraction fades. Few are aware of his true nature: a guardian who, in between periods of dormancy, manifests as the alter ego of a high school girl named Touka Miyashita to fend off "the enemies of the world." Now, a series of mysterious disappearances—thought to be runaways by the school—has caused Boogiepop to awaken. A terrifying beast, however, lurks somewhere in the academy, waiting for the right opportunity to attack. Boogiepop wa Warawanai delves gently into the fundamental relationships between humans and their concept of time.