Seven years ago, Kaguya was taken in by his grandmother after his father's death. Locked in solitary misery, he decides to take his own life. But then he meets a “fox spirit” and decides to take his life back instead. Embracing his past and coming to terms with his true self, Kaguya overcomes his weak heart, and stands with his friends against the high level oni in volume 2 of Battle Rabbits!