After a chain of deaths at a junior high school, new transfer student Koichi Sakakibara turns to a mysterious girl who holds the key to the dark mystery.

Young Haru rescues a cat from being run over, but soon learns it’s no ordinary feline; it happens to be the Prince of the Cats.

Tatsuru and Shinichiro’s relationship shifts from casual to complicated as love and emotions blur the lines between their work and personal lives.