At Eighteen

Ong Seong-wu

as

Choi Joon-Woo

Kim Hyang-gi

as

Yoo Soo-Bin

Shin Seung-ho

as

Ma Whi-Young

Kang Ki-young

as

Oh Han-Kyeol

Sim Yi-young

as

Joon-Woo's mot...

Kim Sun-young

as

Soo-Bin's moth...

Choi Jae-woong

as

Choi Myeong-jun

Moon Bin

as

Jung Oh-je

Jung Young-ju

as

Park Geum-ja

Jung Hyeon-jun

as

Choi Joon-Woo ...

Yoo In-soo

as

Yoo Pil-Sang

Han Sung-min

as

Hwang Ro Mi [S...

Kim Bo-yoon

as

Kwon Da-hwin

Moon Joo-yeon

as

Yoon So-ye