Jung Hye-in

as Oh Sun-hee

as Park Hyo-joo (4 episodes)

as Jeong Hae-soo

as Oh Ja-wa

as Kim Seo-jin (16 episodes)

as Song Mi Na (16 episodes)

as Park Kyung-Rye (16 episodes)

as Go Ye-won (123 episodes)

as Choi Myung-hee (young) (20 episodes)

as Eun-yeong

as Yoon Joo Young (2 episodes)

as Self (2 episodes)

as Hye-in