Rui Kamishiro, an 19 year old college student was reading some book on how to summon a demon, he was bored on his apartment and wanted to entertainment himself buy Summoning a demon for fun. He smirked amd started doing the ritual on the book. all of then sudden, the candles all blew out and the lights start flickering. "What the fuck?" he breathes out in shock and slight excitement, what he saw in front of him was like a human but with demon features. It was you. He summoned, you.