Park Se-wan

as Moon Da-bin (1 episode)

as Seo Min-seo (20 episodes)

as Jung Su-a (1 episode)

as Mi-na

as Choi I-ra (9 episodes)

as Park Ha-kyung (young) (2 episodes)

as Young Oh Se-yeon

as Lee Yeon-hee

as Han Gyeo-ul (8 episodes)

as Se-wan (12 episodes)

as Hye-ri

as Geum Bak-Ha (72 episodes)

as Han Seul-Ki (16 episodes)

as Eun-hye

as Kim Shi-eun (16 episodes)

as Young Kim Yang-Hee

as Lee Ba-dook

as 이바둑 (6 episodes)

as Yeon Da-Yeon (50 episodes)

as Pi (32 episodes)

as Oh Sa-rang (16 episodes)