By day, Adachi is a normal student. By night, he's a terrifying creature of many eyes and many legs who lurks in the darkness. One night, while haunting his own school, he comes across his classmate Yano Satsuki-; she's been an unexpected victim of bullying, and stalking the night in her own way. He's surprised to find himself developing a sympathetic relationship with her. In this supernatural novel about nighttime outcasts, two students confront the monstrous ways that humans can treat each other.