The Timing of Action and Reaction
At Eighteen – Season 1
Fighting with her mother, Su-bin doesn't go home. Determined to reveal Hwi-yeong's true nature, Jun-u starts to gain insight into his behavior.
Cast
Ong Seong-wu
Choi Joon-Woo
Kim Hyang-gi
Yoo Soo-Bin
Shin Seung-ho
Ma Whi-Young
Kang Ki-young
Oh Han-Kyeol
Shim Yi Young
Joon-Woo's mother
Kim Sun-young
Soo-Bin's mother
Choi Jae-woong
Choi Myeong-jun
Moon Bin
Jung Oh-je
Jeong Young-ju
Park Geum-ja
Jung Hyeon-jun
Choi Joon-Woo (young)
Yoo In-soo
Yoo Pil-Sang
Han Sung-min
Hwang Ro-mi
Kim Bo-yoon
Kwon Da-hwin
Moon Joo-yeon
Yoon So-ye
Baek Jae-woo
Go Dong
Kim Kwang-shik
[Oh Je's father]
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