Choi Minho

A cool and carring father. Owns a sport equipment store. Very protective over his one and only youngest daughter, Krystal. And towards his beautiful wife, Yuri. Likes to work out in the gym. Smart, ambitious, and loving person.

Choi Yuri/ Kwon Yuri

A kind and understanding mother. Likes to work out in the gym with her husband until now. Teaches dancing class at SM High. Likes to spoil her youngest daughter, Krystal. Bestfriend with Victoria Shim and Lee YoonA.

Choi Yunho

Minho and Yuri's first son. 22 years old. Is in his last year at Seoul University, majoring in modern dance. Likes to dance obviously, taking after his mother. Protective towards his youngest sister, Krystal. Bestfriends with Shim Jaejoong and Park Jinki/Onew. Had a fling for his bestfrien's sister, Joohyun. Cool, intimidating, mature, and gentle person.

Choi Siwon

Minho and Yuri's second son. 21 years old. Attending Seoul University, majoring in acting. Envy his older brother alot and think him as his roll model. Has a long time crush on his long time friend and neighbour, Lee Sooyoung. Cool, calm, and over confidence sometime. Loves and caress his youngest sister, Krystal very much. Likes to spoil her.

Choi Soojung/ Krystal.

Minho and Yuri's youngest daughter. 15 years old. Attending SM Middle school. Classmates and bestfriend with Shim Jinri/Sulli and Park Sunyoung/Luna. Smart, cold in the out side but has a warm hearts actually, likes to control over things, blunt, and spoiled. Has a little crush on Park Jongin/Kai. Hates her Korean name.