Park bom: 16 y/o, a transfer student from japan to 세이요우 (seiyou) High. Lives alone in a small apartment near her school. Teacher's favorite & always had a normal life as a student & at her apartment. Until 1 day a new neighbor brought a new meaning of life to her. Since then, none of her days went as normal as usual. 

Choi Seunghyun: 17, kingka of the school (not to mention school's no. 1 player), and struggling his way to graduate so he can live his life just the way he wanted. He's the heir of Choi Enterprises, but he wants to have a free life (My life, my rules!). One day, he got a fight w/ his parents which caused him to got kicked out of his house. He can finally enjoy the free life he'd always wanted, but what can he do without his parents money? 

*Lee Chaerin: bom's bestfriend, bold, stylish, cute, & most importantly: has a loooooot of swaaaaag... >w<

*Kwon Jiyong: seunghyun's bestfriend + chaerin's boyfriend, seunghyun's right hand, stylish couple (along with chaerin), likes music & rapping, & thinks of seungri as his own dongsaeng.

Park Seunghyun (Seungri): Bom's dongsaeng & hoobae, cares a lot about his nuna although he didn't show it directly, flirtatious around girls (except bom, dara, & chaerin), thinks girls will easily fall for him, lives with bom at first but later lives w/ jiyong.

*Jiyong&Chaerin will appear around chapter 5 or 6, when bom starts her days on her new school.