You

Name: Eun Jeong Mi (Jeong Mi)
Character: Abused by forever drunk mother and by her own step dad. No shy, drink, dont trust people and dont believe in love, a great fighter.

The boys

Real name: Bang Cheol Yeong
Nickname: MIR
Character: Really sweet and shy. 

Real name: Park Sang Hyun
Nickname: Thunder/ Cheondung
Character: Really friendly and the nicest person in the house.

Real name: Lee Changsun
Nickname: Joon
Character: Always making joked and always happy.

Real name:Jung Byung Hee
Nickname: G.O
Character: The player, can be an sometimes.

Name: Yang Seungho
Nickname: Seungho
Character: Leader, total and extremely impatient but really nice when you get to know him.