김동욱
— Sung-seok
Ko Sung-hee
— Hae-joo
황보라
— Mi-yeon
Kim Eui-sung
— Chang-gyu
임예진
— Hae-joo's mother
Yum Jung-ah
— Mrs. Chun
한수현
— Hae-joo's eldest brother
이채은
— Oh Hye-jin
Woo-jin Jo
— Mr. Seo
강신철
— Lee Jae-young
남지현
— Kim Shin-a
Kim Sun-young
— Cho Su-jung
Yoo Seung-mok
— Coach
Lee Jun-hyeok
— Photographer
민무제
— Hae-joo's second brother
Cha Rae-hyoung
— Hae-joo's youngest brother
Jung Woo-sung
— Traffic police (cameo)
Lee Jung-jae
— Lawyer (cameo)
조윤희
— Bae Mi-ra
윤도건
— Jung Ju-seok