Yang Ik-june

Jung Jong-suk (voice)

Oh Jung-se

Hwang Kyung-min (voice)

Kim Hye-na

Kim Chul (voice)

Park Hee-bon

Young Hwang Kyung-min (voice)

Kim Kkob-bi

Young Jung Jong-suk / Female Karaoke Employee (voice)

Jo Yeong-Bin

Kang-min (voice)

Heo Ji-woong

Detective #1 (voice)

Kyung-soon

Jong-suk's Mother (voice)

Lee Don-yong

Kyeong-min's Father (voice)

Han Hyeon-min

Ahn Jeong-hee (voice)

Lee Jae Hyung

Son Seok-eung / Cheol-i's Father (voice)

Han Yoon-seo

Jong-seok's Older Sister / Dog Owner (voice)

Lee Soo-hyeon

Park Chan-yeong (voice)

Jung In-gi

Publishing Company Director (voice)

Kim Jae-rok

Home Room Teacher (voice)

Kim Sung-hyun

Gym Teacher (voice)

Jang Hyo-jin

Record Shop Owner (voice)

Yeon Sang-ho

Lee Jeong-min / Cat / Kim Yeong Message Center / School students (voice)

Lee Joo-yeong

Cheol-i's Mother (voice)

Choi Gyoo-seok

Detective #2 (voice)