Aoba Reiji must avoid dying together with Nekogami-sama, the Cat God. A cat-eared girl named Nanahara Fuuko who calls herself a god saves Reiji’s life. However, a sliver of the god’s power still remains inside him. That power is something that shouldn’t be inside of a human. At this rate, not only Reiji, but Fuuko who lacks her power, will both lose their lives. There, they decide to join forces to avoid this unwanted fate! According to Fuuko, her divine power is split into seven fragments, with three of those dwelling inside of Reiji. There’s only one way to safely extract them: to shake Reiji’s heart to the very core, by any means necessary.

Fortunately, their school, Mahiro Academy, is soon to go on summer vacation. They don’t have much time left. This summer is going to be a frantic race for their lives!