Ryosuke during teacher work does demon training. However, such i former Devil King! It was sealed in a small shrine with a soul far in the past and has lost power.

Somehow, i who only the part of the "core" of the soul survived, every day when it lives quietly as human. However, if you take the soul of the remainder from the shrine that is sealed, it would be able to revive as Devil King. However, the apparition doesn't bring it close to the shrine. I am also so.

This year, to the student of who i take charge, the potentiality is quite good, but there are very difficult people this year. I succeeded in letting such students break the magical barrier of the shrine in exchange for the supplementary lessons exemption.

The seal is solved, it was good until the soul had been opened. However, the soul becomes the fragment from an excessive shock, it pops up to various places.

I handle students again, fragments are collected to make a comeback as Devil King...