We've All Met 20 Years Ago

김동욱

Yoon Hwa-Pyung

김재욱

Choi Yoon / Matthew

Jung Eun-chae

Kang Kil-Young

Lee Won-jong

Yook Gwang

Park Ho-san

Detective Ko

안내상

Priest Yang

Kim Hye-eun

Park Hong-Joo

Lee Hae-yeong

Kil-Young's senior detective

남문철

Yoon's Instructor Priest

박효주

Kil-Young's mother

Yoo Seung-mok

Hwa-Pyung's father

Jeon Moo-song

Hwa-Pyung's grandfather

이용녀

psychic medium

Jeon Bae-soo

Kim Young-Soo

김시은

Kim Ryoon-Hee

허율

Jung Seo-Yoon

Lee Joo-shil

Seo-Yoon's grandmother

Yoon Jong-suk

Priest Choi