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 Mot...

Kang Ae-sim

as

Principal's Wi...

Min Moo-je

as

Gi-beom's Fath...

Choi Jung-yoon

as

Gi-beom's Moth...

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 s...

Park Sang-myeon

as

50s Man

Park Jae-min

as

Sportscaster

Lee Sang-won

as

Imho Middle Sc...

Baek Do-kyeom

as

Referee

Kim Won-shik

as

Jemulpo High s...

Jeon Yeong

as

Doctor