Are You Really My Grandfather?

Kim Dong-wook

Yoon Hwa-pyung

Kim Jae-uck

Choi Yoon / Matthew

Jung Eun-chae

Kang Kil-young

Lee Won-jong

Yook Gwang

Park Ho-san

Detective Ko

Ahn Nae-sang

Priest Yang

Kim Hye-eun

Park Hong-joo

Lee Hae-young

Kil-young's Senior Detective

Nam Moon-chul

Yoon's Instructor Priest

Park Hyo-ju

Kil-young's Mother

Yoo Seung-mok

Hwa-pyung's Father

Jeon Moo-song

Hwa-pyung's Grandfather

Lee Yong-nyeo

Psychic Medium

Jeon Bae-soo

Kim Young-soo

Kim See-eun

Kim Ryoon-hee

Heo Yool

Jung Seo-yoon

Lee Joo-sil

Seo-yoon's Grandmother

Yun Jong-seok

Priest Choi