바다

Self - Vocal Trainer

Stephanie Kim

Self - Music Producer

이순재

Self - Principal

김희철

Self - Homeroom Teacher

Lee Hae-in

Self - Contestant

Natty

Self - Contestant

Jo Yu-ri

Self - Contestant

장규리

Self - Contestant

이나경

Self - Contestant

이새롬

Self - Contestant

송하영

Self - Contestant

박지원

Self - Contestant

노지선

Self - Contestant

이채영

Self - Contestant

백지헌

Self - Contestant

이서연

Self - Contestant

이영유

Self - Contestant

Joo Se-Bin

Self - Contestant

이시안

Self - Contestant

Herin Seo

Self - Contestant

Tasha Low

Self - Contestant