Luhan hated how much he looks like her twin sister and when the handsome Oh Sehun had mistakenly confessed to him Luhan had decided to act manly from then on. After seven long years Sehun and Luhan met again..   And worst Luhan had to work with Sehun.  

She's afraid of lights   He's afraid of dark One learns to control the weakness while

  Gongchan/Memo