Myungsoo actually liked a girl. Unbelievable. 

Even his friends think so too.

He used to be cold towards every girl. Turns them down when they confess to him. Throw out the love letters that is stuffed on his locker everyday. But since the day he land his eyes on her, Choi Soyeon, he changed. (But still turns down girls and throw love letters out his locker. Just less cold and heartless. Mhm yes.)

He tries hard to make her jealous, win her attention, and especially, win her heart. He used every technique there is from A to Z (Heck. He even googled it!), but she never looked at him. 

One day, he stalked her. Along the way, he got caught by her brother, Choi Junhong, or known as Zelo.

Demanding an explanation from Myungsoo on why the heck is he stalking her sister, Zelo the best absolute perfect and sly stranger he is to Myungsoo, offered himself to help him. But under ONE condition... "You'll have to cover all of my expenses on video games and food and such. Take it or I'll tell my sister that you stalked her."

Desperate (and kinda threatened by Zelo since his pride is on the line), he accepted his offer.