Rabis Vindica, son of the Great Demon King who rules the Demon Realm.
After wiping out a demon clan on his own, he is punished by being sent to the human world.

Living in the body of an ordinary student, Rabis discovers that the demonic power he shouldn’t be able to use reacts to evil.
As he learns how to use this power, he begins searching for a way to return to the Demon Realm.