Garin, your classmates. He always acts weird. You got the news that he practiced witchcraft and killed demons, and yes, he did. You've got an energy that attracts the demons. So you and him make a deal. You'll attract demons, and he will protect you.   "Hey you idiot, meet me on the rooftop after class. We have to talk about your energy, deal?" He says it with a cold tone and gives you stern eyes.