Goo Hara - 17 yrs

An open-minded, pretty and naughty, strongly girl,really loves dancing and singing.A youngest sister with four handsome brother

 Hyunjoong - 18 yrs

Very popular, a handsome,talent and casanova guy,he is singer and actor,best friend of Nickhun,loves Hara.The top 2nd hot boy in school.

Nickhun - 18 yrs

Hara 4th brother, handsome and talent, good at studying,president of school student reunite.The top 3Rd hot boy in school.

Hero Jaejoong - 18 yrs

Very mystery and quiet boy, never talks to girl,only pays attention in reading book,the highest IQ in school, the top 1st hot boy in school with his style of cold-heart person.

ChoiMinho - 17 yrs

A handsome and play-boy, likes pretty girl,good at sport, special basket-ball,the top 4th hot boy in school,same class with Hara.

Seungri - 17 yrs

Brother of Hyunjoong, funny and naughty boy,has girl friend - Huynah,loves his girlfriend very much.The top 5th hot boy in school,same class with Hara.

Huynah - 17 yrs

Seungri's girl friend, best friend of Hara, she's nice and innocent,same class with Hara.

Yoona - 17 yrs

Ex-girlfriend of Jaejoong, but now likes Hyunjoong, does everything to own Hyunjoong, she is very beautiful,has innocent face, dream of hundred boys, an actress and model, has just tranfer to Hara class.