Na-mi, a transfer student, becomes a laughingstock on her first day of school because of her strong southern dialect. Six girls jump in to help the new kid adapt to the new environment, and the girls come to call their circle of friends "Sunny."
Na-mi's brother (young)
Joon-ho (young) / Joon-ho's son
Insurance Company Main Model (cameo) (uncredited))
Ye-bin, Na-mi's daughter
Girls' Generation Leader
Girls' Generation Member