After captivating audiences in romantic dramas such as Queen of Tears, the actress is stepping into the high-pressure world of hospital politics, medical ethics and institutional corruption in Doctor X: Age of the White Mafia.

The Korean drama premiered on 9 October 2026, bringing a new interpretation of the popular Japanese Doctor-X franchise to viewers.

Rather than relying on romantic misunderstandings or family conflicts, the series centres on a gifted surgeon who challenges the powerful figures controlling the hospital around her.

And with Kim Ji-won leading the cast, the adaptation has an opportunity to introduce an established Japanese television concept to a new generation of K-drama fans.

The Japanese drama that started it all

The original Japanese series, Doctor-X: Surgeon Michiko Daimon, premiered in 2012 with Ryoko Yonekura in the title role.

Its protagonist, Michiko Daimon, is a highly skilled freelance surgeon who refuses to become trapped within the rigid hierarchies of Japan’s medical establishment.

Michiko is brilliant, confident and famously unwilling to accept administrative responsibilities that distract her from performing surgery.

Her independence frequently brings her into conflict with hospital executives, senior doctors and administrators who prioritise reputation, power and institutional politics.

The appeal of the original series lies partly in its straightforward central conflict.

Michiko believes her responsibility is to the patient, not to the hospital’s internal hierarchy.

That attitude makes her both indispensable and deeply inconvenient.

What changes in the Korean adaptation?

The Korean version takes the central idea of an exceptional surgeon confronting a compromised medical establishment and places it within a different healthcare and social context.

Kim Ji-won’s character faces a hospital environment where professional authority and institutional influence threaten to interfere with medical judgement.

The title’s reference to a white mafia suggests a system in which those who control medical institutions may exercise power in ways that are difficult to challenge.

For viewers familiar with Korean medical dramas, this setting is particularly interesting.

K-dramas have repeatedly explored the tension between patient care and hospital politics, from ambitious surgeons seeking recognition to administrators attempting to protect their institutions.

Doctor X has the opportunity to approach those familiar conflicts through a protagonist who is unwilling to cooperate with the system.

Why Kim Ji-won is an interesting choice

Kim Ji-won has built a career playing characters who are often more complicated than they initially appear.

In Fight for My Way, she brought humour and vulnerability to Choi Ae-ra.

In My Liberation Notes, her performance as Yeom Mi-jeong was defined by restraint and emotional depth.

And in Queen of Tears, she portrayed Hong Hae-in as a formidable businesswoman whose confident exterior concealed considerable personal pain.

A surgeon challenging powerful colleagues requires a different kind of performance, but it also draws on qualities Kim Ji-won has demonstrated before.

She can portray intelligence and determination without relying on exaggerated confrontation.

That could be particularly effective in a drama where much of the tension comes from a character refusing to surrender her professional independence.

Can Doctor X stand apart from other medical K-dramas?

The medical genre is hardly unfamiliar territory for Korean television.

Hospital Playlist focused on friendships and everyday medical practice, while Dr. Romantic explored mentorship, professional ethics and the pressures facing doctors.

Doctor X has a different foundation.

Its central conflict is built around a surgeon whose abilities allow her to challenge an established hierarchy.

The question is whether the Korean adaptation can preserve that rebellious spirit while developing a distinct identity.

A successful remake needs more than a recognisable premise. It must make its characters, conflicts and social setting meaningful to its own audience.

What happens next?

With the drama only just premiering, it is too early to draw conclusions about its audience ratings, critical reception or long-term popularity.

The first few episodes will provide a better indication of how closely it follows the Japanese original and how successfully it establishes Kim Ji-won’s version of the character.

For now, the most interesting aspect is the adaptation itself.

Japanese and Korean television have different storytelling traditions, and seeing how a long-running Japanese medical heroine is reinterpreted for Korean audiences could be fascinating.

Will Kim Ji-won’s Doctor X become another memorable medical K-drama, or will fans of the original prefer Michiko Daimon’s established version?