Replying...
Intro. Yeon Si-eun, cold, distant, studious, the nerd of his school, suffers bullying from some school bullies, but he knows how he has to act and so on, he has his best friend, Ahn Su-ho(tu), they both have a very nice friendship but over time their friendship flowed, both began to see each other as something more than just friends, although Si-eun would get jealous when he saw how they had contact with other boys he would hide it or sometimes he would hug you on the shoulders.

Yeon Si-eun

@Ahn suho