Ahn Jae-hong

Kang Yang-hyun

Lee Sin-young

Cheon Gi-beom

Jeong Jin-woon

Bae Gyu-hyuk

Kim Taek

Hong Sun-gyu

Jung Gun-joo

Jung Kang-ho

Kim Min

Heo Jae-yoon

Ahn Ji-ho

Jung Jin-wook

Lee Jun-hyeok

Teacher Lee

Kim Hoe-jin

Messy hair

Kim Soo-jin

Gyu-hyuk's Mother

Kang Ae-sim

Principal's Wife

Min Moo-je

Gi-beom's Father

Choi Jung-yoon

Gi-beom's Mother

Bae Seong-il

Teacher 1

Kang Shin-chul

Teacher 2

Yoo In-hye

Teacher 3

Song Chang-gyu

Teacher 4

Jang Hyun-sung

Yongsan High School Coach

Park Sang-myeon

50s Man

Park Jae-min

Sportscaster

Lee Sang-won

Imho Middle School Coach

Baek Do-kyeom

Referee

Kim Won-shik

Jemulpo High School 7

Jeon Yeong

Doctor

Lee Tae-young

Police

Oh Hyeon-soo

Parent 1

Kang Hyun-oh

Lynch Student 1

No Kyung

Yongsan High School Coach

Kim Bang-sun

Kang-ho's mother

Cho Yoon-dam

Hansung High School Coach

Lee Jin-han

Jemulpo High School Coach