Hwang Shin-hye

as Park Hee-Ok (103 episodes)

as Kim Jung-won (50 episodes)

as Classroom Ghost Cameo

as Kang Seo-hee/Kang Ji-yeon (20 episodes)

as Self (1 episode)

as Self (2 episodes)

as Hong Nan-cho (47 episodes)

as Woo Shin Hye (120 episodes)

as Choi Kang-sun (24 episodes)

as Mo Yunhi (16 episodes)

as Jang Kong-Sim (16 episodes)

as Oh Hae-suk

as Park Geum Hee (1 episode)

as Young-hee (24 episodes)

as Han Jung-hee

as Lee Kyung-Ja

as Han Jung-yeon