Jung Woo

as Oh Geun-tae (20s)

Han Hyo-joo

as Min Ja-young (20s)

Kim Yun-seok

as Oh Geun-tae (40s)

Kim Hee-ae

as Min Ja-young (40s)

Jin Goo

as Lee Jang-hee (20s)

Jang Hyun-sung

as Lee Jang-hee (40s)

Kang Ha-neul

as Yoon Hyung-joo

Jo Bok-rae

as Song Chang-sik

Kwon Hae-hyo

as Kim Choon-sik

Lee Ru-ahn

as Ran

Lee Dae-yeon

as Geun-tae's Father

Ahn Jae-hong

as Byung-chul

Park So-dam

as High School Girl

Ki Do-hun

as Se-hwan

Lee Yong-i

as Geun-tae's Aunt

Kim Jae-uck

as Kang Myung-chan

Kim Mi-kyeong

as Geun-tae's Mother

Jeong Soo-kyo

as Pub Friend

Lee Ji-hoon

as MC