It's payment time It's obvious that Luhan is moved by the words of the young boy,that's why he wants to see him again. It's been a week since Luhan is not seeing Sehun not until...

 

Luhan saw Sehun opening the rest room's door..he hide his self and watch Sehun's movement

-this is the right time for my revenge

When Sehun is already  inside the c.r Luhan carefully ran to the door and locked it,he look at his surroundings making sure that no one is seeing him.

-the last laugh is mine!

"yah! open the door! anyone! help!" Sehun yelled from inside

"help!help!"

-my head starts to hurt again when this guy starts to shout for help,it's like my mind needs to recover some memories..I left the place and ran until I cant here his voice.I think it's better not to see him forever.