Why Oh Soo Jae Cast led by Seo Hyun-jin, Hwang In-youp, and Heo Joon-ho. Explore the characters behind the courtroom drama, romance, and mystery that captivated viewers with its intense performances and emotional depth.
Table of Contents
Introduction
Why Her is a gripping legal drama that dives deep into themes of justice, ambition, and redemption. The story centers on Oh Soo-jae, a once-celebrated lawyer whose fall from grace leads her to teach law while confronting past traumas. The drama’s emotional weight and intense courtroom scenes are brought vividly to life by a talented ensemble cast.
Supported by a strong secondary cast, Why Her combines suspense and heartfelt moments that captivate viewers episode after episode.
Why Oh Soo Jae Cast
Seo Hyun-jin as Oh Soo-jae
As the youngest partner at the prestigious TK Law Firm, she appears invincible — until she’s demoted to a law professor after a scandal. Beneath her cold exterior lies deep trauma, regret, and a longing for justice.
Seo Hyun-jin, often called the “Queen of Melodrama,” delivers a powerful, layered performance. Known for roles in Another Miss Oh and The Beauty Inside, she portrays Soo-jae’s emotional armor and slow unraveling with nuance and intensity.
Hwang In-youp as Gong Chan
A warm, sincere law student with a painful and mysterious past.He hides a tragic secret that connects him to her in unexpected ways — making their bond more than just student and teacher.
Heo Joon-ho as Choi Tae-kook
The powerful and ruthless chairman of TK Law Firm. Choi Tae-kook is a master manipulator who uses the legal system and people around him for his own gain. He views Oh Soo-jae as both an asset and a threat.
Heo Joon-ho, a veteran actor known for Designated Survivor: 60 Days and Kingdom, brings gravitas and quiet menace to this chilling antagonist.
Bae In-hyuk as Choi Yoon-sang
Choi Tae-kook’s son and a fellow law student. Though kind-hearted and intelligent, Yoon-sang is caught in the moral crossfire between his father’s corruption and his own sense of justice. He also harbors feelings for Soo-jae.
Supporting Cast
Ji Seung-hyun as Choi Joo-wan
The eldest son of Choi Tae-kook and older brother of Choi Yoon-sang. As a key player in TK Law Firm’s internal politics, Joo-wan is arrogant, entitled, and deeply involved in many of the firm’s corrupt dealings.
Ji Seung-hyun, known for roles in Crash Landing on You and Search: WWW, plays a polished yet morally compromised figure with chilling ease.
Kim Chang-wan as Baek Jin-gi
A law professor with a calm and rational demeanor who becomes a guiding figure for Gong Chan and other students. He has a hidden past that ties into Soo-jae’s history and the firm’s darker secrets.
Veteran actor Kim Chang-wan brings subtle gravitas and mystery to his role, contributing to the drama’s layered storytelling.
Lee Kyung-young as Han Seong-beom
A corrupt prosecutor and key ally to Choi Tae-kook. He plays a major role in manipulating the legal system for TK Law Firm’s benefit, often clashing with Soo-jae’s sense of justice.
Lee Kyung-young is widely recognized for playing powerful, morally grey characters, and this role is no exception.
Heo Joon-seok as Min Young-bae
A loyal but morally ambiguous senior member at TK Law Firm. He assists with behind-the-scenes operations and often finds himself carrying out Choi Tae-kook’s dirty work.
Heo Joon-seok adds depth to the firm’s darker workings, playing a character caught between power and conscience.
Conclusion
The success of Why Her is deeply rooted in its remarkable cast, led by the commanding Seo Hyun-jin, the emotionally grounded Hwang In-youp, and the formidable Heo Joon-ho. Together with a talented supporting ensemble, they bring to life a story that’s as much about personal healing as it is about challenging corruption and seeking justice.
Each actor delivers layered, emotionally resonant performances that elevate the legal drama beyond its genre — turning courtroom battles and personal traumas into compelling storytelling. From morally gray mentors to loyal students and ruthless power players, the cast of Why Her leaves a lasting impression on anyone who follows its journey of truth, redemption, and resilience.
High Society Cast & Their Role 2015 Romantic Kdrama
FAQs
Who plays the lead character Oh Soo-jae?
Seo Hyun-jin plays Oh Soo-jae, a brilliant but emotionally scarred lawyer. She’s known for her versatility and previously starred in Another Miss Oh, Dr. Romantic, and The Beauty Inside.
Is this Hwang In-youp’s first lead role?
No, but Why Her marked a more serious and mature turn in his career. Hwang In-youp rose to fame in True Beauty and has since expanded into deeper roles.
What is Heo Joon-ho best known for?
Veteran actor Heo Joon-ho is widely respected for roles in Kingdom, Designated Survivor: 60 Days, and Escape from Mogadishu. His portrayal of Choi Tae-kook adds menace and authority to Why Her.
Was there chemistry between Seo Hyun-jin and Hwang In-youp?
Yes. Despite the age gap, their emotional chemistry was praised by fans for its subtlety and intensity, especially as their characters shared a bond rooted in past trauma and healing.
Who are some of the standout supporting cast members?
Kim Chang-wan, Lee Kyung-young, Ji Seung-hyun, and Heo Joon-seok round out the legal and political backdrop with impactful performances.
Is Seo Hyun-jin a trained lawyer or just acting the part?
Just acting! Seo Hyun-jin is a trained singer (former lead vocalist of M.I.L.K) turned actress, but her performance was so convincing that many viewers praised her courtroom scenes as incredibly realistic.
Are any cast members real-life friends or close offscreen?
While specific friendships weren’t widely publicized, behind-the-scenes clips showed great rapport among the cast, especially between Seo Hyun-jin and Hwang In-youp.
Where can I watch other dramas featuring this cast?
Seo Hyun-jin – Another Miss Oh, You Are My Spring, Dr. Romantic
Hwang In-youp – True Beauty, The Sound of Magic, 18 Again
Heo Joon-ho – Kingdom, Designated Survivor: 60 Days, Come and Hug Me
Bae In-hyuk – Cheer Up, Why Her, My Roommate Is a Gumiho