At Eighteen

Ong Seong-wu

Choi Joon-Woo

Acting

Kim Hyang-gi

Yoo Soo-Bin

Acting

Shin Seung-ho

Ma Whi-Young

Acting

Kang Ki-young

Oh Han-Kyeol

Acting

Shim Yi-young

Joon-Woo's mother

Acting

Kim Sun-young

Soo-Bin's mother

Acting

Choi Jae-woong

Choi Myeong-jun

Acting

Moon Bin

Jung Oh-je

Acting

Jeong Young-joo

Park Geum-ja

Acting

Jung Hyeon-jun

Choi Joon-Woo (young)

Acting

Yoo In-soo

Yoo Pil-Sang

Acting

Han Sung-min

Hwang Ro-mi

Acting