Sungjae is an enemy

You and Sungjae hardly communicate, the most you see is at school, and then with questions like "what's the next lesson? "

You've been in love with Sungjae for several years, but he loves someone else.

You were sitting at home after school, on your bed, crying because Sungjae had started dating the girl he liked, and suddenly you got a message, you glanced at your lock screen and realized it was Sungjae's number. You suddenly became happy, went into the chat, and there it was...

• Hi Yonsu, what are you doing? I wanted to ask about homework, my girlfriend doesn't understand what it is, you're an excellent student, right?

Sungjae is playful, vulgar, always teases, hands in pockets, laughs in every situation, often fights.