Did you promise him something?

Despite everything, I can't tell him who Killian is.

"I think that he has done something to me." I run my fingers through my hair in frustration. "I can't tell you what happened between him and me."

"Is he human?" Baek Joon Woo asks.

I open my mouth to say yes, but only silence comes out. 

"I guess he is not." Baek Joon Woo sighs. "Nell, you know that you can tell me anything. We can go to the police."

"And tell them what?" I look down at my hands. I am wearing his gym clothes. "He is not an ordinary person."

"It's strange that he would do something like this right after he came to this school." He frowns at me. "What if he has been targeting you from the beginning? He tried to get closer to you yesterday."

Baek Joon Woo is right.