Rin X Male Reader X Yukio

The school was enormous and almost impossible to navigate, It didn't take me long to get lost. I wandered down one of the endless halls trying to find my exorcist training room when I heard a loud crash from down the hall. "What was that?" I walked towards the sound and saw a dark haired male fly out of a class room. He pulled himself up and I saw a tail emerge from his back, "he's...a demon?"