Jun Ji-hyun as The Girl

Cha Tae-hyun as Kyun-woo

Kim In-mun as Kyun-woo's Father

Song Ok-suk as Kyun-woo's Mother

Han Jin-hee as The Girl's Father

Kim Il-woo as Quintuplets

Seo Dong-won as Army Deserter

Yoo Soon-chul as Old Man (uncredited)

Park Seon-a as Policewoman

Im Ho as Blind Date Man (uncredited)

Lee Mu-yeong as (uncredited)

Kwak Jae-yong as Covered Cart Bar Customer (uncredited)

Yang Geum-seok as Kyun-woo's Aunt

Hyun Sook-hee as The Girl's Mother