Han Saet Byul
Actor Name: Kim Yoo Bin
Han Saet Byul (Kim Yoo Bin) is the daughter of Kim Soo Hyun (Lee Bo Young) and Han Ji Hoon (Kim Tae Woo). She is an adorable child with a kind personality. However, she has only one friend, Ki Young Gyu (Baro), who is a mentally-disabled teenage boy.