Sooyoung

SUPER JUNIOR's Sungmin taught Sooyoung to play the guitar.

Sooyoung's older sister, Choi Soojin, is a musical actress.

Sooyoung loves baseball

Sooyoung trained for 6 years and 3 months.

Sooyoung lived with BoA when she was promoting in Japan, calling her "senpai".