Eito Mitsuo was simply a regular student when he encountered a strange boy at Saint Maria's Academy by the name of Shiro Aya. Shiro was rude and generally tried to stay away from others so Eito was sure he'd never get too close to the other. However, all that changed when Eito was suddenly met with the horrible sight of his classmate feasting on a stranger one night. Since then, Eito has felt as if he's constantly being watched by his cannibal classmate. Will Eito be the next meal for knowing Shiro's horrible secret?