Kim Si-eun

as Han A-reum (1 episode)

as Young Joo In-ah (1 episode)

as Cha Se-Jung (12 episodes)

as Kwon Min-jeong (6 episodes)

as L (11 episodes)

as Park Ro-sa (16 episodes)

as Hee-soo

as Kang Yu-jeong (1 episode)

as Gop Dan / Young Ryu Cho-hui (3 episodes)

as Young Yi

as Cha Ba-reun (50 episodes)

as Doggo Sun (16 episodes)

as Moon So-ra (12 episodes)

as Kang Jin-Kyung (16 episodes)

as Yuk-jo (14 episodes)

as A-Reum (4 episodes)

as Kim Hye-sun (16 episodes)

as Lee Ji-eun (16 episodes)

as Lee Myung-jin (16 episodes)

as Bon-sook

as Student 4