이현우

Kang Han-Kyeol

조이

Yoon So-Rim

최민수

Kang In-Woo

이정진

Choi Jin-Hyuk

김인권

Homeroom Teacher

임예진

Kim Soon-Hee

Lee Seo-won

Seo Chan-Young

Sung Joo

Yoo Shi-Hyun

Hong Seo-young

Chae Yoo-Na

Song Kang

Baek Jin-Woo

장기용

Ji In-ho

Lee Su-ryeon

Reporter

Jung Yoo Geun

Kang Han-Kyeol (child)

Lee Yoo-jun

[sound engineer]

Lee Seo Hyeon

Yoon So-Rim (child)

Kang Woo-je

[Yoo Hyun Jung's assistant]

김용건

[Yoo Hyun Jung's father, chairman Who Entertainment]

박종혁

Lee Kyoo Sun

신제민

Lee Yoon

유주원

Lee Kyoo Sun (young)