PLOT:
Yoseob, Doojoon and Junhyung are best friends, they tell each other EVERYTHING but Yoseob tells Junhyung a secret and makes him swear not to tell Doojoon. However, Doojoon also tells Junhyung a secret that he can't tell Yoseob.

What exactly is this secret? And can Junhyung keep it to himself? 

CHARACTERS: 
Yoseob
Doojoon
Junhyung

(Some other characters may be added or just make appearances in different chapters.)