Han Sang Hyuk's life was normal. More than normal; he had a good girlfriend, a ridiculously stupid best friend, and normal, loving parents. His grades were fine, the teachers liked him, and he didn't necessarily get bullied. But, Sanghyuk's normal life starts heating up when he makes a new friend, Leo, a boy who doesn't talk, dresses strangely out of date, and stares at Sanghyuk for hours without so much as blinking. When strange and awful things start occuring at his school, Sanghyuk becomes a target and a scapegoat for the reason behind the abnormal happenings. With nowhere else to turn, Sanghyuk goes straight to Leo for help. But this only adds fuel to the fire when people find out about Leo. 

Because no one else can see him.