Satan's son

Rin spent his whole life not knowing who he was or what he was capable of.

When his father died due to Satan possessing him Rin decided to become an excorcist and kick Satan's ass.

When all the class were on a trip to see who would be allowed to go on missions Rins identity of being Satan's son is revealed! (This story the grigori never captured him.) how will every one treat him now they know his secret??