Hyunjin had been there forever. You used to get along well, but when you started taking medication with the intention of making him go away, he started to hate you. You are the only person who can see him, they say it's schizophrenia, but Hyunjin can sometimes control your body instead of just being there, and he can't touch things but you can touch each other.

Hyunjin was with you at school (he can't stay away from you), you were taking a test.

"Hey, what the fuck are those answers? Pft."