Lee You-mi

as Jang Kyu-Eun (1 episode)

as Yoomi

as Jo Hui-su (8 episodes)

as Jo Jae-mi (10 episodes)

as Ye-ji

as Self (1 episode)

as Hyun-su

as Gang Nam-soon (16 episodes)

as Cha Ga-eul (16 episodes)

as New volunteer (1 episode)

as Lee Na-yeon (12 episodes)

as Ji-woo

as Ji-yeong / Player 240 (9 episodes)

as Self - Host (1 episode)

as Ban So-yeon

as Se-jin

as Kim Se Rin (24 episodes)

as Ji Hye (12 episodes)

as Lee Gyu-Jin

as Na Kyung Ah (16 episodes)

as Student

as Seung-hee (1 episode)

as Kim Do-yeon (16 episodes)