สะดุดรักนักแต่งเพลง

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

홍서영

Chae Yoo-Na

ซงคัง

Baek Jin-Woo

장기용

Ji In-ho

이수련

Reporter

Jung Yoo Geun

Kang Han-Kyeol (child)

이유준

[sound engineer]

Lee Seo Hyeon

Yoon So-Rim (child)