The whole school knew Jongin is an angel while Kai is the little devil and are dying to hang with the twins. But not Oh Sehun, who prefers in the shadow rather than the crowd. But his whole life changed when his mother married the twins' father without his notice and he is forced in the family along with the twins. Especially when Kai won't stop bothering him and Jongin just won't stop making him flustered.

Oh Sehun

Kim Jongin

Kim Kai 

Park Chanyeol

"Isn't it funny? You don't even like him Sehun, your heart are beating for me not him." 

"Shut it Kai. You are not worth it for my heart to beat just for you." 

"Keep telling lies Oh Sehun, I will make sure you will be begging for me." 

"You wish."