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Koo Ja-sung

Koo Ja-sung

Acting

Biography

Goo Ja Sung is a South Korean actor and model. He made his acting debut in 2007. He has appeared in various dramas since his debut including, “Misty” (2018) and “The Secret Life of My Secretary” (2019).

Known For

Men on a Mission
7.5

Male celebs play make-believe as high schoolers, welcoming star transfer students every week and engaging in battles of witty humor and slapstick.

Men on a Mission

2015
The Secret Life of My Secretary
7.4

When a telecom executive develops face blindness, he mistakes his secretary for a wealthy heiress -- which she allows to get out of hand.

The Secret Life of My Secretary

2019
Was It Love?
6.7

After 14 years devoid of romance, a struggling movie producer and single mom faces the unexpected arrival of 4 men into her life—an author, an actor, a CEO, and a younger man—who might just revive her dormant desire for love.

Was It Love?

2020
Motel California
6.8

A woman with a unique upbringing in a motel in the countryside leaves her hometown at 20 to pursue her career in Seoul. Twelve years later though, she returns home to heal her heart and experiences twists and turns as she reunites with her first love, a now eligible bachelor and veterinarian.

Motel California

2025
Dunia: Into a New World
8.0

A group of celebrities encounters a new world in the land of Dunia. In the unfamiliar world where one false move directly leads to a drastic outcome, they learn to adapt, survive, and cooperate. It's the survival of the fittest between real-life celebrities including Jung Yoon Ho, Jung Hye Sung, Luda, Don Spike, Kwon Hyun Bin, Sam Okyere, and more.

Dunia: Into a New World

2018
Sponsor
6.7

A romance thriller between four men and women running like a runaway locomotive toward different desires, including success, revenge, children and love. Lee Sun Woo, is a photographer and editor in magazine. He keeps a burning ambition and heartfelt desire for revenge hidden behind his warm exterior. Han Chae Rin is the CEO of a cosmetics company. She is greedy and ambitious despite her success. Park Da Som is a rising actress. She does anything for success. At the same time, she struggles to protect her son who has a rare disease. She’s internally struggling between motherhood and success, and despite her cold exterior, she truly loves her ill son. Hyun Seung Hoon, Park Da Som’s husband is an aspiring model. His life goals are: overcome poverty and failures. He dreams of succeeding in life.

Sponsor

2022
Misty
7.3

When a popular anchorwoman for a prime time news show becomes the suspect in a murder case, her estranged husband - who has worked as a prosecutor in the past but now works as a public defender - decides to defend his wife.

Misty

2018
Genesis
3.8

A man who digs into his mother's mysterious death meeting humans with the same faces as him one by one and becoming embroiled in a bigger conspiracy.

Genesis

2021
The Siren
4.8

Manager Oh, an employee at a noise pollution treatment center, takes his own life after suffering verbal abuse by local residents demanding a huge amount of compensation. Amid public criticism of regional self-centeredness, Taeseung joins the center as his successor. With his heart set on getting promotion, Taeseung immediately goes around asking for signatures. As the local residents cooperate in order to avoid further public criticism, the promotion seems to be just around the corner. However, when Youngsik and Donggyu get in the way, Taeseung suspects that they may have killed Manager Oh.

The Siren

2021
Naughty by Arrangement
N/A

Interning at Hankook University Hospital, Na-eun goes on a blind date with her professor Kangjun.

Naughty by Arrangement

2026
The Blue Sea
5.5

An action drama that tells the story of a mysterious young man who lost his memory. Jo Eun Hee is a female soldier in the navy who works with Sung Ki Soo to carry out special missions under UDU (Underwater Demolitions Unit) Sung Ki Soo is a navy lieutenant who is also a professor at the non-commissioned officer department who is the first to see through the identity of the young man who lost is memory.

The Blue Sea

2017