송혜교

Mi-ra

강동원

Dae-soo

Jo Sung-mok

Ah-reum

백일섭

Mr. Jang

허준석

Seung-chan

김소진

Writer Kim

차은우

Ah-reum

채서진

Lee Seo-ha

이성민

Ah-reum's Doctor

김갑수

Dae-soo's Father

황석정

Praying Woman

Chae Yoon-hee

Praying Woman

Yang Seung-geol

Mi-ra's Father

태연

Self

티파니

Self

서현

Self

Lee Yun-u

Bad Girl

Kang Suk-won

Taekwondo Team Coach