Pemeran Melancholia

Lim Soo Jung (임수정)

as Ji Yoon Soo

Pemeran Utama

Lee Do Hyun (이도현)

as Baek Seung Yoo

Pemeran Utama

Jin Kyung

as Noh Jung Ah

Pemeran Utama

Choi Dae Hoon (최대훈)

as Ryu Sung Jae

Pemeran Utama

Oh Gwang Rok

as Ji Hyeon Uk [Yun Su's father]

Pemeran Pembantu

Woo Da Vi

as Sung Ye Rin [Min Joon's and Hye Mi's daughter]

Pemeran Pembantu

Jang Hyun Sung

as Sung Min Joon [National assemblyman]

Pemeran Pembantu

Byun Jung Soo

as Yoo Hye Mi [Min Joon's wife]

Pemeran Pembantu

Kim Ho Jin

as Baek Min Shik [Seung Yoo's father]

Pemeran Pembantu

Baek Ji Won

as Min Hee Seung [Seung Yoo's mother]

Pemeran Pembantu

Choi Woo Sung (최우성)

as Jang Kyu Young [Asung High School student]

Pemeran Pembantu

Shin Soo Yun

as Choi Si An

Pemeran Pembantu

Lee Yoo Jin

as Sung Yoo Chan [Ye Rin's brother]

Pemeran Pembantu

Kim Ji Young

as Kim Ji Na [Noh Jung Ah's daughter]

Pemeran Pembantu

Oh Hye Won

as Noh Yeon Woo [Asung Middle School principal]

Pemeran Pembantu

Jang Gwang

as Noh In Hyeong [Asung School chairman]

Pemeran Pembantu

Ahn Sang Woo

as Han Myeong Jin [Asung High School math teacher]

Pemeran Pembantu

Yang Jo Ah

as Kim Jin Hee [Ahsung High School teacher]

Pemeran Pembantu

Kim Mi Hye

as Ah Sung Go [Asung High School math teacher]

Pemeran Pembantu

Lee Kang Ji

as Lee Hyun Jae [Seung Yoo's friend]

Pemeran Pembantu

Lee Sang Jin

as Park Hyeong Do [Seung Yu's friend]

Pemeran Pembantu

Kyung Ki Hyun

as Il Woo [Seung Yoo's friend]

Pemeran Pembantu

Lee Se Na

as Jo Yoon A

Pemeran Pembantu

Son Jin Hwan

as Oh Jin Taek [Asung High School principal]

Pemeran Pembantu

Jeon Jin Ki

as Choi Seong Han [Asung High School assistant principal]

Pemeran Pembantu

Lee Tae Hyung

as Im Hyeong Bin [Sammu Academy director]

Pemeran Pembantu

Kwon Hyuk Soo

as Jung Il Young [Minister of Eduction]

Pemeran Pembantu

Park Yong

as Shin Seung Jae [Vice Minister]

Pemeran Pembantu

Song Kyung Hwa

as [Student's mother]

Pemeran Pembantu

Jo Seung Yeon

as [Student's mother]

Pemeran Pembantu

Bo Ra Na

as [Student's mother]

Pemeran Pembantu

Park Sung Yun

as Yoo Sun A [Kyu Young's mother]

Pemeran Pembantu

Han Ki Joong

as Ryu Hyeon Il [Sung Jae's father] (Ep. 6)

Pemeran Pembantu

Lee Ji An

as Park So Jung

Pemeran Pembantu

Kang Du Hyun

as [Rubik's Pyramid boy] (Ep. 1)

Bintang Tamu

O Gyu Taek

as [Student's father] (Ep. 1)

Bintang Tamu

Min Jung Sup

as [Detective] (Ep. 1)

Bintang Tamu

Lim Jung Min

as [Security guard] (Ep. 1)

Bintang Tamu

Lee Chang

as [Teacher] (Ep. 2)

Bintang Tamu

Jo Young Mi

as [In Hyeong's maid] (Ep. 2)

Bintang Tamu

Hong Eun Jeong

as [Bridal shop employee] (Ep. 3)

Bintang Tamu

Jang Ho Joon

as [Student] (Ep. 3)

Bintang Tamu

Seo Jeong Hoo

as [Student affairs staff] (Ep. 3)

Bintang Tamu

Chu Yeon Gyu

as [Ahsung High School teacher] (Ep. 3-4, 6, 9-10)

Bintang Tamu

Jeon Guk Hyang

as Shin Kyung In [Sung Jae's mother] Aunt (Ep. 3, 5-6, 12)

Bintang Tamu

Paul Battle

as Adolf Miller [Professor] (Ep. 4)

Bintang Tamu

Yeo Woon Bok

as Cha Sung Won (Ep. 4-5)

Bintang Tamu

Garrison Michael Farquharson-Keener

as [Professor] (Ep. 4-5)

Bintang Tamu

Choi Seung Hoon

as Baek Seung Yoo / Baek Min Jae [Young] (Ep. 4-5)

Bintang Tamu

Lee Eun Ju

as [Vice Minister Sin's wife] (Ep. 4, 6)

Bintang Tamu

Lee Go Eun

as Sung Ye Rin [Young] (Ep. 5)

Bintang Tamu

Kim Jin Goo

as Kim Han Chul (Ep. 5)

Bintang Tamu

Park Ji Ho

as [Reporter] (Ep. 5)

Bintang Tamu

Lee Joo Young

as [Nurse] (Ep. 5)

Bintang Tamu

Han Ho Yong

as [Photography studio employee] (Ep. 5)

Bintang Tamu

Park Jin Young

as Ms. Lee (Ep. 6)

Bintang Tamu

Song Si An

as Ji Yoon Soo [Young] (Ep. 6)

Bintang Tamu

Park Yoon Young

as No Yeon Woo [Young] (Ep. 6)

Bintang Tamu

Ahn Chan Woong

as [No Yeon Woo's secretary] (Ep. 6)

Bintang Tamu

Seong Chan Ho

as [Speaker] (Ep. 6)

Bintang Tamu

Hwang Soo Min

as [News program host] (Ep. 6-7)

Bintang Tamu

Park Chul Min

as Kim Sang Wook (Ep. 6-7)

Bintang Tamu

Yang Ha Yoon

as [TNN reporter] (Ep. 7)

Bintang Tamu

Kim Oh Bok

as [Moderator] (Ep. 7)

Bintang Tamu

Lee Chae Min

as [Boarding school staff] (Ep. 7)

Bintang Tamu

Seo Hye Jin

as [Sanatorium nurse] (Ep. 7)

Bintang Tamu

Lee Yoon Sang

as Minister Kyung Woo Min (Ep. 7, 11-12)

Bintang Tamu

Kwak Myung Hwa

as [Minister Kyung Woo Min's Wife] (Ep. 7- 8, 11-13)

Bintang Tamu

Seon Woo

as [Jenny's mother] (Ep. 7-8, 12-13)

Bintang Tamu

Lee Da Yeon

as Kyung Soo Young (Ep. 7-10, 12-14)

Bintang Tamu

So A Rin

as Ahn Jenny (Ep. 7-10, 12-14)

Bintang Tamu

Kang Moon Kyung

as [Professor] (Ep. 7, 16)

Bintang Tamu

Kim Bong Su

as [Janggi match onlooker] (Ep. 8)

Bintang Tamu

Kim Hae Gon

as [Real estate agent] (Ep. 8)

Bintang Tamu

Lee Dong Chan

as [Janggi match onlooker] (Ep. 8

Bintang Tamu

Lee Jae U

as Park Si Hyung [Police officer] (Ep. 8)

Bintang Tamu

Jo Hye Sun

as [Sammu Academy staff] (Ep. 8-9)

Bintang Tamu

Hong Seong Gwan

as [Security room staff] (Ep. 9)

Bintang Tamu

Bae Yoo Ri

as [Restaurant hostess] (Ep. 9-10)

Bintang Tamu

Lee Dong Gyu (이동규)

as [TNN anchorman] (Ep. 10)

Bintang Tamu

Oh Seung Chan

as [Doctor] (Ep. 10)

Bintang Tamu

Jang Eui Don

as [Prosecutors' office staff] (Ep. 10)

Bintang Tamu

Lee Ji Young

as [Book signing photographer] (Ep. 11)

Bintang Tamu

Jun Joon Woo

as [UTN reporter] (Ep. 12-13)

Bintang Tamu

Yook Hyun Suk

as [Reporter] (Ep. 12-13, 15)

Bintang Tamu

Hwang Joo Ho

as Attorney Jang (Ep. 13)

Bintang Tamu

Kim Myung Joong

as [Asung Foundation Board member] (Ep. 13)

Bintang Tamu

Park Shin Woon

as [Detective] (Ep. 13-14)

Bintang Tamu

Yun Ki Chang

as [Detective] (Ep. 13-14)

Bintang Tamu

Yook Mi Ra

as [Yeon Woo's Aunt (Ep. 13-15)

Bintang Tamu

Park Se Hoon

as [Detective] (Ep. 14)

Bintang Tamu

Seol Chang Hee

as [Ryu Sung Jae's contact] (Ep. 14)

Bintang Tamu

Lee Seo Yul

as Mr. Ahn (Ep. 14, 16)

Bintang Tamu

Yoo Ji Hyuk

as [Detective] (Ep. 15)

Bintang Tamu

Shin Won Woo

as [Prosecutors' office staff (Ep. 15)

Bintang Tamu

Yoon Dan Bi

as [Nurse] (Ep. 15)

Bintang Tamu

Min Sang Chul

as [Doctor] (Ep. 15)

Bintang Tamu

Choi Yi Sun

as [Reporter] (Ep. 15-16)

Bintang Tamu

Lee Yu Ju

as [Train passenger] (Ep. 1)

Bintang Tamu

Kaare Svejgaard Olsen

as [MIT professor] (Ep. 4-5)

Bintang Tamu

Park Hee Jung

as Park Hye Yeong (Ep. 6, 11)

Bintang Tamu

Han Jae Hun

as Ha Yeong U

Bintang Tamu

Kim Sang Ji

as Shin So Min

Bintang Tamu

Kim Seo Won

as [Prosecutor's office staff] (Ep. 15)

Bintang Tamu

Lee Ji Woo

as [Orphanage girl] (Ep.9)

Bintang Tamu

Kim Joon Ho

as Kim Jun Ho

Bintang Tamu

Bae Ha Neul

as [Doctor] (Ep.5)

Bintang Tamu

Sin Ga Ram

as [Student]

Bintang Tamu

Hwang Ji A

as Lee Hyun Seo (Ep. 16)

Bintang Tamu

Yu Seung Il

as [Prosecutor] (Ep. 16)

Bintang Tamu

Lee Sung Il

as [Prosecutor] (Ep. 16)

Bintang Tamu

Ko Gyeong Man

as [Prosecutor] (Ep. 16)

Bintang Tamu

Lee Ji Su

as [Prosecutor] (Ep. 16)

Bintang Tamu

Kim Yoon Seol

as [Student] (Ep. 16)

Bintang Tamu

Go Seung Bo

as [Student] (Ep. 16)

Bintang Tamu

An Seong Won

as [Student] (Ep. 16)

Bintang Tamu

Seo Hee

as [Award ceremony staff] (Ep. 16)

Bintang Tamu

Lee Jong Goo

as [Professor] (Ep. 16)

Bintang Tamu

Park Road

as [Student]

Bintang Tamu

Cho Hyun Min

Bintang Tamu

Lee Na Bin

Bintang Tamu

Park Se Jun

Composer

Kim Sang Hyub

Sutradara

Kim Ji Woon

Screenwriter