Begins Youth

Jung Sung-il

Kim Chang-joon

Seo Ji-Hoon

Kim Hwan

Woo Hee-Jin

Hwang Seo-yoon (Jae-ha's mother)

Ji-Hoon Park

Seo Min-kook

Namhee Kim

Song Joon-ho

Jung Hyun Noh

Min Se-in

Kim Yoon-woo

Park Ha-ru

Myung-Ryul Nam

Koo Hyun-bok (Principal)

Jin-Seo Jeon

Jeon Je-ha

Jung Woo-Jin

Kim Joo-an

Ji-ho Ahn

Jeong Ho-soo

Yeong-ju Seo

Kim Do-geon

Yeong-su Park

Container owner

Jung Hyun Chul

Teacher

Park Ah-sung

Kim Do-hyun (Do-geon's brother)

Jeong Soo-hyun

Thug

Jung-sub Yoon

Teacher

Jang Eui-don

Chang-joon's party attendee