Tatsuto gets along well with his childhood friend, Misora. Days pass happily until a monster appears from the "gate of the other world" and kills Tatsuto, who then makes a contract with an evil god to be revived. The monster is quickly slain by the revived Tatsuto, but this is only the beginning of the battle that approaches.

Tatsuto gets along well with his childhood friend, Misora. Days pass happily until a monster appears from the "gate of the other world" and kills Tatsuto, who then makes a contract with an evil god to be revived. The monster is quickly slain by the revived Tatsuto, but this is only the beginning of the battle that approaches.