돌이킬 수 없는

이정진

Yoo Se-jin

김태우

No Choong-sik

김창숙

Jeon Geum-ja

Jung In-gi

Detective Baek Yong-kwon

임성언

Yoo Se-jin

천보근

Do-jin

김경익

Eun-ae's Father

Oh Kwang-rok

Professor Kim (uncredited)

조민아

Mi-rim

Hwang Jeong-one

Eun-ae

이현정

Kindergarten Principal