You've just finished high school and planning to go to college and buy your own apartment. After thinkign you'll be fine until you run into trouble. 

1. Your friend moved back to Busan to help out at her parent's store
2. Buying one aprtment and your landlord sold your aprtment to someone else keeping your contract
3. The worse part of all you live with your enemy, Jung Ilhoon

Jung Ilhoon is keeping a secret and that's he's been in love with you since he first met you. How will you deal with Ilhoon living with you and his friends always dropping in unannounced?

Characters:

Rhie Choon Hee (You)

You are a loyal friend who has issues with a group of boys from your high school that you had just gradurated form. It's not that you hated them it's just from what you've seen and heard you don't want to bother with stupid people in your words. You are into crafts and making things yourself. You are obsessed with music and sometimes you will dance without noticing. You are a very caring person and somethings are hard for you to talk about even with your best friend.

Ahn Crystal (Your Best and Only Friend)

Crystal is your best friend who had to move back to Busan because of family issues. You two are close friends and talk about everything together except you two think alike and won't bring some subjects up until to late. You two keep in touch while she's away. She's in love with Ilhoon. 

Jung Ilhoon (Jerk)

You can't stand him even though you know practically nothing about him. To you he's just a weirdo who annoys you until you find out that you'll be living with him. Even though his family lives in Busan he stayed in Seoul. He has deep feelings fo ryou and hasn't told any of his friends who it is he's in love with. He can be childish and really unmaly, but after a whiel you seem to notice he's not that bad to have around.

BTOB

An annoying group of boys that you had started off hating until you met them. They still annoy you more than anything, but whenever you see them you find them more entertaining than anything. They are a talented group of boys that seem to care about you.

Oh Sehun (ex-friend)

He had confessed to you a year an a half ago but you turned down his feelings and he seemed to stop being friends with you. though after you move in with ilhoon and Crystal moves he appears at your apartment doorstep. He seemed to be an emotionless person when really he just has trouble most of the time expressing himself. You're afraid ot let him back into your life cause of how everything ended between the two fo you though sometimes you miss him. The old him that was very expressive.