Park Seo-yeon

as Seo Dan (young)

as Kim Dan-o

as Baek Young Joo

as Kim Se-jung

as Young Chung-ee

as Young Shim Mi-jin

as Yeon-i

as Choi Na-ri

as Gong So Hee [Seung Cheol's daughter]

as Kang Ah-reum

as Seo-woo

as Baek Song-i

as Yoo Ari

as Jin-hee

as Chae Yi

as Kang Yi-ji

as High School Girl

as Sun-a

as Choi Kyeong-eun

as Sister