Then one day, her daily life suddenly changes. Unknown creatures fly out from a large number of spheres sent from outer space and begin to parasitize...

Kageru's mother was killed by a demon when Kageru was five. But now there is an unexpected opportunity for revenge.

Yukio and Suzuka are a couple living together. Yukio keeps working and quitting his job to write novels, and Suzuka is anxious about their future....