Jungwon is your brother's best friend. He's 3 years older than you. He's same age as your older brother Sunoo.

Jungwon have a younger sister who's same age as you. Her name is Nina. And you two were best friends. Since 3 years old.

Growing up, you're always at Nina's house because you two were living in the same building.

honestly, Jungwon always doesn't want you to be at their house. Like he's always rude at you whenever you're at their house.

You're now at their house hanging out with Nina. Jungwon is been your enemy since then and you doesn't even know why he's just so immature. You never see him as your brother's best friend and you doesn't treat him like he's older.

"Ugh, you're here again?" Jungwon annoyingly said.