Pemeran 20th Century Boy and Girl

Han Ye Seul

as Sa Jin Jin

Pemeran Utama

Kim Ji Suk (김지석)

as Kong Ji Won

Pemeran Utama

Lee Sang Woo

as Anthony / Lee Chul Min

Pemeran Utama

Ryu Hyun Kyung

as Han Ah Reum

Pemeran Utama

Lee Sang Hee

as Jang Young Shim

Pemeran Utama

Ahn Se Ha

as Jung Woo Sung

Pemeran Utama

Oh Sang Jin

as Kang Kyung Suk

Pemeran Utama

Kim Chang Wan

as Sa Chang Wan [Jin Jin's father]

Pemeran Pembantu

Kim Mi Kyung

as Kim Mi Gyeong [Jin Jin's mother]

Pemeran Pembantu

Shin Won Ho

as Sa Min Ho [Jin Jin's brother]

Pemeran Pembantu

Kim Young Sun

as Lee Gwang Hui [Ji Won's mother]

Pemeran Pembantu

Shin Se Hwi

as Lee Ha Ram [Ji Won's younger half-sister]

Pemeran Pembantu

Kim Tae Hoon

as Lee Seung Goo [Anthony's father / Ji Won's step-father]

Pemeran Pembantu

Choi Bum Ho

as Han Hak Gyu [Ah Reum's father]

Pemeran Pembantu

Yoon Bok In

as Yoon Bok In [Ah Reum's mother]

Pemeran Pembantu

Park Myung Shin

as Kim Young Ja [Young Shim's mother]

Pemeran Pembantu

Kim Ik Tae

as Jang Jang Soo [Young Shim's father]

Pemeran Pembantu

Kim Kwang Shik

as Jang Gi Bong [Jin Jin's manager]

Pemeran Pembantu

Lee Jae Kyoon

as Lee Hong Hee [Jin Jin's road manager]

Pemeran Pembantu

Lee You Mi

as Mi Dal / Cho Min Hyeon [Jin Jin's stylist]

Pemeran Pembantu

Shin Dong Mi

as Choi Jung Eun [Anthony's manager]

Pemeran Pembantu

Jang Jae Ho

as Kim Tae Hyun [Ji Won's assistant]

Pemeran Pembantu

Jang Hee Ryung

as Jang Ji Hye [Flight attendant]

Pemeran Pembantu

Cha Seo Won

as Lee Dong Hoon [Co-pilot]

Pemeran Pembantu

Kang Mi Na (강미나)

as Sa Jin Jin [Young]

Pemeran Pembantu

Kim In Seong

as Gong Ji Won [Young]

Pemeran Pembantu

Park Seo Ham

as Anthony [Young]

Pemeran Pembantu

Song Soo Hyun

as Han Ah Reum [Young]

Pemeran Pembantu

Lee Chang

as PD Bong

Pemeran Pembantu

Han Ji Won

as Jang Young Shim [Young]

Pemeran Pembantu

Au Hin Wai

Pemeran Pembantu

Kim Ha Yun

as Sa Jin Jin [Child]

Bintang Tamu

Jo Yeon Ho

as Gong Ji Won [Child]

Bintang Tamu

Lee Han Seo

as Ah Reum [Child]

Bintang Tamu

Do Yeong Seo

as Young Shim [Child]

Bintang Tamu

Kwon Do Kyun

as Jung Woo Sung [Young]

Bintang Tamu

Kim Jung Hwa

as Sa Ho Sung / Lee Soo Hyun [Jin Jin's older sister]

Bintang Tamu

Lee Dae Yeol

as [Himself] (Ep. 1, 3)

Bintang Tamu

Kim Dong Hyun

as [Himself] (Ep. 1, 3)

Bintang Tamu

Y

as [Himself] (Ep. 1, 3)

Bintang Tamu

Park Jae Seok

as [Himself] (Ep. 1, 3)

Bintang Tamu

Universe

as [Himself] (Ep. 1, 3)

Bintang Tamu

Lee Jang Jun

as [Himself] (Ep. 1, 3)

Bintang Tamu

Bae Seung Min

as [Himself] (Ep. 1, 3)

Bintang Tamu

Bong Jae Hyun

as [Himself] (Ep. 1, 3)

Bintang Tamu

Hong Joo Chan

as [Himself] (Ep. 1, 3)

Bintang Tamu

Choi Bo Min

as [Himself] (Ep. 1, 3)

Bintang Tamu

Kim Ji Beom

as [Himself] (Ep. 1, 3)

Bintang Tamu

Heo Ji Woong

as [Himself] (Ep. 2)

Bintang Tamu

Lee Joon Gi (이준기)

as [Jin Jin's father] [Voice] (Ep. 4)

Bintang Tamu

Lee Yoon Sang

as [Rejected client] (Ep. 4)

Bintang Tamu

Park Yong

as [Rejected client] (Ep. 4)

Bintang Tamu

Park Seung Tae

as [Elder couple in elevator] (Ep. 6, 9)

Bintang Tamu

Han Tae Il

as [Elder couple in elevator] (Ep. 6)

Bintang Tamu

Yeo Woon Bok

as [Ji Won's father](Ep. 7-8)

Bintang Tamu

Park Seul Ki

as ["We Got Married" MC] (Ep. 11)

Bintang Tamu

Park Eun Ji

as ["We Got Married" MC] (Ep. 13)

Bintang Tamu

Ji Yoon Ho

as Hyun Woo ["We Got Married" cast member] (Ep. 14)

Bintang Tamu

Lee Chae Kyung

as [Director Shin's team] (Ep. 19)

Bintang Tamu

Jo Sun Mook

as [National Chemicals] (Ep. 19)

Bintang Tamu

Lee Nam Hee

as [Taxi driver] (Ep. 20)

Bintang Tamu

Baek Yoon Heum

as [Reporter] (Ep. 22)

Bintang Tamu

Shin Dong Hoon

as Jung Yung Jin [Reporter]

Bintang Tamu

Han Sun Hwa

as Jung Da Young [Model / Actress]

Bintang Tamu

Kim Shin Young

as [Herself] | [Radio DJ]

Bintang Tamu

Jo Hyun Sik

as [School van driver]

Bintang Tamu

Shim Hyung Tak

as Terius / Jung Chang Hoon

Bintang Tamu

Woo Je Yeon

as [Boys Be Ambitious idol group member]

Bintang Tamu

Kim Ji Hun

as [Boys Be Ambitious idol group member]

Bintang Tamu

Kim You Jin

as [Boys Be Ambitious idol group member]

Bintang Tamu

Jeong In Seong

as [Boys Be Ambitious idol group member]

Bintang Tamu

Jung Ji Young

as Jung Ji Young [DJ]

Bintang Tamu

Kim So Yeon

as Director Kim

Bintang Tamu

Kim Seung Chan

as Jong Hwa

Bintang Tamu

Kim Gun

as [Chubby elementary school student]

Bintang Tamu

Kim Su In

as [Elementary school student]

Bintang Tamu

Woo Sung Min

as [Boy fan of Jin Jin]

Bintang Tamu

Kim Seo Jung

as Hee Jin [Woo Sung's date]

Bintang Tamu

Ok Joo Ri

as [Lawyers cleaning lady]

Bintang Tamu

Hong Boo Hyang

as [Mother of child]

Bintang Tamu

Hong Ye Ji

as [Nurse]

Bintang Tamu

Joo Byung Ha

as [Flight attendant's husband]

Bintang Tamu

Ham Jin Sung

as [CF assistant director]

Bintang Tamu

Kim Mi Hye

as [News Anchor]

Bintang Tamu

Kim Jin Goo

as [Mediator]

Bintang Tamu

Kim Baek Ri

as [Crew member]

Bintang Tamu

Choo Soo Bin

Bintang Tamu

Yook Mi Ra

Bintang Tamu

Kwon Hyuk Soo

Bintang Tamu

Jang Tae Min

Bintang Tamu

Shin Bo Ra

Bintang Tamu

Jung Mi Mi

Bintang Tamu

Kim Na Young

Bintang Tamu

Ha Jin

Bintang Tamu

Jung Jong Woo

Bintang Tamu

Kim Na Moo

Bintang Tamu

Lee Soo Hyun

Asisten Sutradara

Jung Se Rin

Composer

Lee Dong Yoon

Sutradara

Jeon Sang Keun

Music Editor

Lee Seon Hye

Screenwriter