Full cast of Boyhood

Yim Si-wan

Jang Byung-tae

10 episodes

Lee Sun-bin

Park Ji-young

10 episodes

Lee Si-woo

Jung Gyeong-tae

10 episodes

Kang Hye-won

Kang Seon-hwa

10 episodes

Kim Jeong-jin

Yang Cheol-hong

10 episodes

Lee Sang-jin

Jo Ho-seok

10 episodes

Kim Yoon-bae

Yoon Yeong-ho

10 episodes

Heo Geon-young

Kang Dae-jin

10 episodes

Park Gun-joo

Jo Sang-woo

10 episodes

Seo Dong-kyu

Yoo Seung-ho

10 episodes

Jeon Hee-jung

Son Young-hee

10 episodes

Han Dong-won

Kim Hyeong Gi [Police officer]

10 episodes

Lee Jae-Mu

Jang Byung-tae [Young]

10 episodes

Kang Pil-jun

Jung Seong-Gil

1 episode