Rin Okumura is a regular teenager living out his life, going to school, and trying to get a job. He constantly gets in fights protecting things, making it harder for him to get a job, has extraordinary strength, and is a fantastic cook. However Rin has a secret about himself that not even he knows he has.

Rin Okumura, is the son of Satan. As the son of Satan, he inherits the power to make blue flames appear around him, and has a demon form to boot, however, he doesn’t quite know that he is the son of Satan. For he got raised in a monastery, being raised by a priest, who he knows as his father.

However one day, as the number of demons raise, they start to become aware of Rin’s presence, and take a stand to try and kidnap him. After all, who’s a better bargaining chip against Satan than his own son. As things get heated, Rin ends up having to transfer, but not just anywhere, True Cross Academy, one of the most prestigious schools in the world.

Now, this school is prestigious for its grades and schooling yes, but its also known among exorcists for another reason, its a school that specifically exists to train upcoming exorcistsl. So now you have the son of Satan, becoming an exorcist, someone who specifically fights demons. Obviously things will happen with a scenario like this, but watch it yourself to find out.