Kim Woo-bin as Chi-ho

Lee Jun-ho as Dong-woo

Kang Ha-neul as Kyung-jae

Jung So-min as So-min

Lee Yu-bi as So-hee

Min Hyo-rin as Jin-joo

Ahn Jae-hong as In-gook

Heo Joon-seok as Bum-soo

Jeon Yeo-jin as Bum-soo's Wife

Park Myung-shin as Chi-ho's Mother

Oh Hyun-kyung as Dong-woo's Mother

Yoon Ga-hyun as Grilled Clam Restaurant Owner

Kim Eui-sung as Chi-ho's Father

Na In-woo as Dong-won

Han Jun-woo as Club DJ

Kim Chan-hyung as Head of Loan Shark

Baek Soo-hee as Min-jung

Park Hyeok-kwon as Movie Director

Song Ye-dam as Twin Brother

Song Ye-joon as Twin Brother

Kim Jong-soo as Dong-woo's Uncle

So Hee-jung as Kyung-jae's Mother

Hong Wan-pyo as Assistant Director

Yang Hyun-min as So-jung

Kim Jae-man as Chicken Restaurant Owner

Hwang Mi-young as Woman bumps into Kyung-jae on Campus

Oh Ha-nee as Makeup Team

Kang Chung-hun as Dong-woo's Colleague

Jung Seo-in as Hair Salon Staff