At Eighteen

"A misunderstood loner is drawn out of his shell after transferring to another high school, where he comes across new ordeals -- and first love."

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

Shim Yi Young

as Joon-Woo's mother

Kim Sun-young

as Soo-Bin's mother

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 (young)

Yoo In-soo

as Yoo Pil-Sang

Han Sung-min

as Hwang Ro Mi [Soo Bin's classmate]

Kim Bo-yoon

as Kwon Da-hwin

Moon Joo-yeon

as Yoon So-ye

Baek Jae-woo

as Go Dong

Yun Gyeong-a

Writer

Sim Na-yeon

Director