Song Seung-heon

as Lee Dong-chul

56 episodes

Yeon Jeong-hun

as Lee Dong-wook

56 episodes

Park Hae-jin

as Shin Myung-hoon

56 episodes

Lee Da-hae

as Min Hye-rin

56 episodes

Han Ji-hye

as Kim Ji-hyun

56 episodes

Lee Yeon-hee

as Gook Young-ran

(+1 more)

56 episodes

Jo Min-ki

as Shin Tae-hwan

56 episodes

Lee Mi-sook

as Yang Chun-hee

56 episodes

Yoo Dong-geun

as Gook Dae-hwa

56 episodes

Shin Dong-woo

as Lee Dong-chul (5 years old)

56 episodes

Kim Bum

as Lee Dong-chul (15 years old)

56 episodes

Park Gun-tae

as Lee Dong-wook (10 years old)

56 episodes

Nam Ji-hyun

as Kim Ji-hyun (10 years old)

56 episodes

Jeon Mi-seon

as Lee Jung-ja

56 episodes

Jeong So-yeong

as Hye-Ryung

56 episodes

Dennis Oh

as Mike Packard

56 episodes

Lee Jong-won

as Lee Ki-chul

56 episodes

Hwang Jung-eum

as Kim So-jung

56 episodes

Jeon So-min

as Lee Ki-soon

56 episodes

Jin Ji-hee

as Lee Ki-soon (9 years old)

56 episodes