"I hate you ! I wish you were never born !" 
 

"Dongwoo ..." 
 

"Just get out of my face and never speak to me again! "

Those words I said before ..... 
They must of hurt you a lot ..... 
But please consider , that if I could take back every single thing I said that day I would ... 
I never realized how lucky I ever was to have you as a brother till you actually left ....  

Come back . . . please. 

Summary 

Ever since they were young , Dongwoo (also known as CNU) always despised Jinyoung. Although they were brothers and were meant to share , it felt as though Jinyoung got every thing he wanted and Dongwoo would be fading away in the corner enviously. 
One night , Jinyoung mysteriously disappeared after a loud bang came from his room. The police found no evidence of who the kidnapper could be and left Jinyoung's mother and his friends in tears. 
Dongwoo tried to tell himself that he is happier without him , but soon he realizes how generous Jinyoung actually was to him and he never deserved what happened to him that night. 
Dongwoo eventually decides to do his best and risk everything to look for the kidnapper and treat Jinyoung like a proper , kind brother would.