* Kim Shiza: • female lead • student • sketch artist • have a good voice • scared of height and speed.
* Park keum : • male lead • student • guitarist • don't know how to sing • cold and hard past.
* Nanny : • second female lead • British immigrant • have high IQ • allergic to perfumes and dust • her only friend is Shiza.
* Choi Woojin : • second male lead • student • filthy rich • good at nothing but a great painter • loving and warm natured guy.
* Mrs. Kim : Shiza's mom, who is sensitive and protective about her baby girl and still treat her 20 year old as a kid.
* Mr. Kim : Shiza's dad, who is busy as a bee. don't have time for his family but send gifts on every holiday.
* Mr and Mrs. Park: Keum's parents who died in a plane crash when Keum was 6 year old.
* Ms. Selina Parker: Nanny's mother. who is a single mother. had a tough life. hate Nanny's father because he left her as soon as he got to know that she is pregnant with Nanny.
* Mr and Mrs. Choi : Woojin's parents. live outside the country because their business is more important and left loads of money to their son.
* Mr and Mrs Lim: Keum's so called guardians whom raised him just for the money his parents left and didn't spend a single peny for his better future.
* Ms. SoFi: a 42 year old lady who is super sweet and owns a cafe. who still consider herself as a 16 year old.
* Dean Manishka: A horrible dean who is super biased towards her son.