Family Register

Not to be confused with Family register.
Family Register
Promotional poster
Hangul
가족관계증명서
Lit.Family Relationship Certificate
RRGajok gwangye jeungmyeongseo
MRKajok kwan'gye chŭngmyŏngsŏ
Genre
Written byPark Ji-hyun [ko]
Directed byKim Mi-sook [ko]
Starring
Country of originSouth Korea
Original languageKorean
No. of episodes26
Production
Executive producers
  • Lee Hyung-sun
  • Seo Ho-jin
Production companies
Original release
NetworkMBC TV
ReleaseJuly 6, 2026 (2026-07-06) –
present

Family Register (Korean: 가족관계증명서) is an ongoing South Korean melodrama family television series written by Park Ji-hyun [ko], directed by Kim Mi-sook [ko], and starring Park Se-young, Han Go-eun, Im Ji-eun, Sung I-eon [ko], Park Sol-la, and Yoon Hee-seok. The series depicts the story of a woman who, from birth, is branded as the destroyer of her family, and who fights against prejudice and fate to reclaim her life. It premiered on MBC TV on July 6, 2026, and airs every Monday to Wednesday and Friday at 19:05 (KST), and every Thursday at 19:10 (KST).

Synopsis

The series follows Na Ji-ni, Na Se-ri, and Noh Young-joo as they navigate family conflict, public judgment, and personal struggles while redefining their relationships and the true meaning of family.

Cast and characters

Main

Although she grew up in a privileged household as the daughter of a famous cellist and a director, she harbors deep emotional wounds that she has not easily confided in others. Her status as an illegitimate child led to bullying and falsehoods in her youth. Do-hee, whom she had considered a friend, exposed the secret and led a bullying spree, significantly impacting Ji-ni's life. She studied Korean painting at Hankuk University, focusing on creating K-animation with international appeal.[1]
Ji-ni's mother. A cellist who once dominated Korea's classical music scene, she is driven by ambition and prioritizes her own interests above all else. Despite achieving career success through her appearance and talent, she was stigmatized as an "adulteress". She had an affair with Cha Min-ki, a married man, and gave birth to Ji-ni. In a tearful interview, she framed the relationship as a "romance of the century" and depicted Young-ju, who refused divorce, as a malicious wife. This allowed her to recast herself from perpetrator to victim in public perception and maintain her position at the National Symphony Orchestra. Following the press conference, Se-ri and Min-ki were believed by the public to have become a legally married couple.[1]
A vocal music major, she aspired to become a musical actress and developed her skills in singing and acting. Following a relationship with her university peer Cha Min-ki, she became pregnant. She discontinued her career aspirations to raise their two sons, Seung-hyun and Seung-woo, with Min-ki. Her family life ended when Min-ki began living with cellist Na Se-ri.[1]
Director of the Korea Art & Culture Center. As a child, he received little attention at home. His father was often absent for months at a time due to work at sea, and his mother provided little care. He began playing piano during a period of isolation, and it became his primary focus.[1]
  • Park Sol-la as Do Do-hee
A painter and influencer with numerous followers. She was raised by wealthy parents and has depended on their resources. She perceives that others envy her, though she has not achieved independent accomplishments. Her primary focus is maintaining a glamorous presence on social media. Since private elementary school, Do-hee ranked second to Ji-ni in academic standings. Despite efforts to meet her mother's expectation of ranking first, she did not achieve first place. Her mother's emphasis on being number one affected Do-hee. After experiencing physical punishment, Do-hee directed her frustration toward Ji-ni. As a result, she revealed Ji-ni's secret.[1]
Ji-hoo's uncle and a traditional Korean medicine doctor. He operates a clinic in the same building as Young-ju's singing class. Although he lacks musical ability, he attends her class more consistently than other students. After meeting Young-ju, he experiences romantic feelings.[1]

Supporting

Young-joo's family
CEO of the production company "Cha Production" and father of Ji-ni, Seung-hyun and Seung-woo.
Young-joo and Min-ki's eldest son who works as a Grade 7 postal service civil servant.
Young-joo and Min-ki's second son and a documentary PD at a broadcasting station.
Youngest daughter of the chairman of a Vietnamese quasi-chaebol family, who later became Seung-hyun's wife.
  • Jang Yi-jun as Cha Oh-reum[1]
Seung-hyun and Mai's son.
  • Kim Dong-jun as Noh Il-dong[1]
Young-joo's younger brother and Jung-bin's secretary and personal attendant.
Il-dong's wife and Ji-hoo's butler.
Lim family
Ji-hoo's father, who is a two-star rear admiral in the ROK Navy.
Jung-bin's wife and Ji-hoo's mother.
Others
  • Yoon Ji-won as Jeon Jung-ah[1]
Ji-ni's college classmate and best friend.
Ji-hoo's best friend and owner of the cafe on the first floor of the building where Ji-ni and Jung-ah's art studio is located.
A writer for a broadcasting station.

Production

Development

The series is directed by Kim Mi-sook [ko], who helmed The Brave Yong Su-jeong (2024), and written by Park Ji-hyun [ko], who wrote You Are the Boss! (2013) and Person Who Gives Happiness [ko] (2016–2017). It is jointly produced by MBC C&I and Void, the production company behind the 2024 film Hidden Face.[2]

Casting

In April 2026, Han Go-eun and Park Se-young were reportedly cast to lead the series as mother-daughter.[3][4] The following month, the appearances of both actress were officially confirmed, and Im Ji-eun, Sung I-eon [ko], Park Sol-la, Seo Do-young, and Jeon Seung-bin [ko] joined the cast.[2][5]

Release

The series is scheduled to premiere on MBC TV on July 6, 2026. It will air every Monday to Wednesday and Friday at 19:05 (KST), and every Thursday at 19:10 (KST).[6]

Viewership

Family Register : South Korea viewers per episode (thousands)
EpisodesEpisode number
12345678910111213141516171819202122232425
1–25831706815820765821863795819865776805790888848820890774848908909885825825908
26–50TBDTBDTBDTBDTBDTBDTBDTBDTBDTBDTBDTBDTBDTBDTBDTBDTBDTBDTBDTBDTBDTBDTBDTBDTBD
51–75TBDTBDTBDTBDTBDTBDTBDTBDTBDTBDTBDTBDTBDTBDTBDTBDTBDTBDTBDTBDTBDTBDTBDTBDTBD
76–100TBDTBDTBDTBDTBDTBDTBDTBDTBDTBDTBDTBDTBDTBDTBDTBDTBDTBDTBDTBDTBDTBDTBDTBDTBD
101–120TBDTBDTBDTBDTBDTBDTBDTBDTBDTBDTBDTBDTBDTBDTBDTBDTBDTBDTBDTBD–
Source: Audience measurement performed nationwide by Nielsen Korea.[7]
Average TV viewership ratings
Ep. Original broadcast date Average audience share
Nielsen Korea[7]
Nationwide Seoul
1 July 6, 2026 4.3% (10th) 4.0% (8th)
2 July 7, 2026 3.9% (10th) 3.4% (10th)
3 July 8, 2026 4.3% (8th) 3.7% (8th)
4 July 9, 2026 4.3% (9th) 4.1% (7th)
5 July 10, 2026 4.1% (12th) 4.6% (10th)
6 July 13, 2026 4.6% (9th) 4.1% (8th)
7 July 14, 2026 4.9% (9th) 4.6% (6th)
8 July 15, 2026 4.2% (8th) 4.1% (8th)
9 July 16, 2026 4.4% (8th) 4.2% (6th)
10 July 17, 2026 4.4% (10th) 4.4% (10th)
11 July 20, 2026 4.3% (9th) 4.0% (9th)
12 July 21, 2026 4.2% (10th) 4.0% (9th)
13 July 22, 2026 4.3% (9th) 4.0% (7th)
14 July 23, 2026 4.4% (8th) 4.3% (7th)
15 July 24, 2026 4.5% (9th) 4.1% (9th)
16 July 27, 2026 4.4% (10th) 4.0% (8th)
17 July 28, 2026 4.5% (9th) 4.4% (6th)
18 July 29, 2026 4.1% (10th) 4.0% (7th)
19 July 30, 2026 4.5% (8th) 4.1% (6th)
20 July 31, 2026 4.4% (12th) 4.3% (11th)
21 August 3, 2026 4.5% (9th) 4.0% (8th)
22 August 4, 2026 4.6% (9th) 4.2% (7th)
23 August 5, 2026 4.2% (9th) 4.0% (7th)
24 August 6, 2026 4.4% (9th) 4.1% (6th)
25 August 7, 2026 4.5% (13th) 4.5% (10th)
26 August 10, 2026
27 August 11, 2026
28 August 12, 2026
29 August 13, 2026
30 August 14, 2026
Average — —
  • In the table above, the blue numbers represent the lowest ratings and the red numbers represent the highest ratings.

References

  1. ^ a b c d e f g h i j k l m n o p q r 가족관계증명서 (등장인물) [Family Register (Characters)]. MBC (in Korean). Retrieved June 21, 2026.
  2. ^ a b Yoo, Jung-min (May 19, 2026). 박세영·한고은·임지은, MBC '가족관계증명서' 출연 확정 [Park Se-young, Han Go-eun, and Im Ji-eun Confirmed to Star in MBC's Family Relationship Certificate]. iMBC (in Korean). Retrieved May 19, 2026.
  3. ^ Kang, Hyo-jin (April 15, 2026). [단독]한고은, 일일극 여왕 도전...MBC '가족관계증명서'로 3년 만에 귀환 [[Exclusive] Han Go-eun Challenges to Become Queen of Daily Dramas... Returns After 3 Years with MBC's Family Relationship Certificate]. SPOTV (in Korean). Retrieved April 15, 2026.
  4. ^ Kang, Hyo-jin (April 22, 2026). [단독]박세영, 결혼·출산 후 4년 만에 컴백...MBC '가족관계증명서' 출연 [[Exclusive] Park Se-young Makes Comeback 4 Years After Marriage and Childbirth... Appears in MBC's Family Relationship Certificate]. SPOTV (in Korean). Retrieved April 22, 2026.
  5. ^ Yoo, Jung-min (May 21, 2026). MBC '가족관계증명서' 성이언·박솔라·서도영·전승빈, 청춘 라인업 [MBC Family Relationship Certificate Sung Ie-on, Park Sol-la, Seo Do-young, Jeon Seung-bin, Youth Lineup]. iMBC (in Korean). Retrieved May 21, 2026.
  6. ^ Moon, Chae-young (May 19, 2026). 박세영·한고은·임지은, '가족관계증명서' 7월 6일 첫 방송 [Park Se-young, Han Go-eun, and Im Ji-eun, Family Relationship Certificate Premieres on July 6]. The Fact (in Korean). Retrieved May 19, 2026.
  7. ^ a b Nielsen Korea ratings:
    • "Ep. 1". Nielsen Korea (in Korean). July 6, 2026. Retrieved July 7, 2026.
    • "Ep. 2". Nielsen Korea (in Korean). July 7, 2026. Retrieved July 8, 2026.
    • "Ep. 3". Nielsen Korea (in Korean). July 8, 2026. Retrieved July 9, 2026.
    • "Ep. 4". Nielsen Korea (in Korean). July 9, 2026. Retrieved July 10, 2026.
    • "Ep. 5". Nielsen Korea (in Korean). July 10, 2026. Retrieved July 11, 2026.
    • "Ep. 6". Nielsen Korea (in Korean). July 13, 2026. Retrieved July 14, 2026.
    • "Ep. 7". Nielsen Korea (in Korean). July 14, 2026. Retrieved July 15, 2026.
    • "Ep. 8". Nielsen Korea (in Korean). July 15, 2026. Retrieved July 16, 2026.
    • "Ep. 9". Nielsen Korea (in Korean). July 16, 2026. Retrieved July 17, 2026.
    • "Ep. 10". Nielsen Korea (in Korean). July 17, 2026. Retrieved July 18, 2026.
    • "Ep. 11". Nielsen Korea (in Korean). July 20, 2026. Retrieved July 21, 2026.
    • "Ep. 12". Nielsen Korea (in Korean). July 21, 2026. Retrieved July 22, 2026.
    • "Ep. 13". Nielsen Korea (in Korean). July 21, 2026. Retrieved July 23, 2026.
    • "Ep. 14". Nielsen Korea (in Korean). July 23, 2026. Retrieved July 24, 2026.
    • "Ep. 15". Nielsen Korea (in Korean). July 24, 2026. Retrieved July 25, 2026.
    • "Ep. 16". Nielsen Korea (in Korean). July 27, 2026. Retrieved July 28, 2026.
    • "Ep. 17". Nielsen Korea (in Korean). July 28, 2026. Retrieved July 29, 2026.
    • "Ep. 18". Nielsen Korea (in Korean). July 29, 2026. Retrieved July 30, 2026.
    • "Ep. 19". Nielsen Korea (in Korean). July 30, 2026. Retrieved July 31, 2026.
    • "Ep. 20". Nielsen Korea (in Korean). July 31, 2026. Retrieved August 1, 2026.
    • "Ep. 21". Nielsen Korea (in Korean). August 3, 2026. Retrieved August 4, 2026.
    • "Ep. 22". Nielsen Korea (in Korean). August 4, 2026. Retrieved August 5, 2026.
    • "Ep. 23". Nielsen Korea (in Korean). August 5, 2026. Retrieved August 6, 2026.
    • "Ep. 24". Nielsen Korea (in Korean). August 6, 2026. Retrieved August 7, 2026.
    • "Ep. 25". Nielsen Korea (in Korean). August 7, 2026. Retrieved August 8, 2026.

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