Shura: a  6 year old little girl who is half Korean and half American, she has a older brother who is 12. Her parents died in a car crash, and is then adopted by KIm Hyun Joong and Park Jung min of SS501.

Guen: he is Shura's older brother who is 12 with the same mother and father. He is also adopted but by Heo Young Saeng and Kim Kyu Jong of SS501

SS501: as themselves