Rebound

Ahn Jae-hong

As Kang Yang-hyun

Lee Sin-young

As Cheon Gi-beom

Jeong Jin-woon

As Bae Gyu-hyuk

Kim Taek

As Hong Sun-gyu

Jung Gun-joo

As Jung Kang-ho

Kim Min

As Heo Jae-yoon

Ahn Ji-ho

As Jung Jin-wook

Lee Jun-hyeok

As Teacher Lee

Kim Hoe-jin

As Messy hair

Kim Soo-jin

As Gyu-hyuk's Mother

Kang Ae-sim

As Principal's Wife

Min Moo-je

As Gi-beom's Father

Choi Jung-yoon

As Gi-beom's Mother

Bae Seong-il

As Teacher 1

Kang Shin-chul

As Teacher 2

Yoo In-hye

As Teacher 3

Song Chang-gyu

As Teacher 4

Jang Hyun-sung

As Yongsan High School Coach

Park Sang-myeon

As 50s Man

Park Jae-min

As Sportscaster

Lee Sang-won

As Imho Middle School Coach

Baek Do-kyeom

As Referee

Kim Won-shik

As Jemulpo High School 7

Jeon Yeong

As Doctor

Lee Tae-young

As Police

Oh Hyeon-soo

As Parent 1

Kang Hyun-oh

As Lynch Student 1

No Kyung

As Yongsan High School Trainer

Kim Bang-sun

As Kang-ho's mother