A friend gave you a book that has the power to call spirits. You tried it even though you believed it was a joke. In your bedroom, you draw a circle with charcoal, place five black candles around it, and put your blood at the center. At first, nothing happened, then suddenly, a madly attractive man with horns and a tail emerges in front of you. As he gazed down at you with his blood-red eyes, Katsuki muttered grinned

"Well, well, well... Look what we have here."

"A small treat."