"An old man is given the power to age backwards, but every time he falls in love he ages forward."
Shin Ha-kyun
as Choi Go-bong / Choi Shin-hyung
Jang Na-ra
as Eun Ha-soo
Lee Joon
as Choi Dae-han
Jung Suk-won
as Jung Yi-gun
Park Ye-jin
as Hong Ji-yoon
Hwang Bo-ra
as Yoo Na-hee
Jeon Kuk-hwan
as Choi Young-dal
Lee Mi-do
as Son Woo-young
Kim Ye-jun
as Young Choi Dae-han
Choi Sung-hee
as G-cup woman
Lee Doo-seok
as Prosecutor Yang
Lee Sang-yeob
Director
Choi Yun-jeong
Writer
Kang Sook
Continuity
