“care to explain why there is a dragon dancing in the middle of my living room?!” “V gave Jungkook one of her weird potion, noona”, Jimin whispered conspirationally while giggling like a schoolgirl. “that was…” “cool”, V cut her with proud look on her face. Yoongi gave her a pointed look, “…stupid. I wanna say stupid”, the green haired girl continued. “I’m agree with V. it is rather cool”, Tae piped up, siding her twin. “well, this is pretty amusing”,

Jongin is your stereotypical bully, and Kyungsoo is a misterious transfer student who pour his steaming coffee on Jongin pants the very first day he transfered. Jongin is reckless, airhead, and selfish. And he vow to make Kyungsoo last year a living hell. Kyungsoo is black, dauntless, and full of secrets. Being the nemesis of the famous Kim Kai in his last year actually excite him in a way he never felt before. 

Jongin always think he knows everything about his three years girlfriend, but guess he is wrong. He doesn't know anything about her, about the secret she hide from him in order not to break him. No, he doesn't know at all until the other girl come to replace her.