WHY: 당신이 연인에게 차인 진짜 이유

정건주

Cha Yeon-wu

Oh Ah-yeon

Song Da-in

Yoo Dong-guk

Oh Seul-gi

Hwang İn-youp

Gi Jae-young

Lee Ji-won

Lee Han-na

이소희

Yeo Ju-hyun

Kim Young-jae

[Dain's ex-boyfriend]

Choi Hee Seung

Kim Min Woo (Ep. 2) | Guest Role

Im Hwe Jin

Kwak Jun Mo (Ep. 2) | Guest Role