Netflix is betting that Trauma Code: Heroes on Call is more than a breakout season. The streamer has confirmed two more seasons of the Korean medical drama, brought back most of its core cast, and made one high-profile change in the supporting lineup.
The number behind the renewal
Since its January 24, 2025 debut, the Netflix original has collected 43.6 million views, spent five weeks in the platform’s global top 10 and reached number one. That is a strong conversion for a webtoon adaptation, and it has now translated into a two-season order.
A multi-season pickup is a meaningful planning signal. It suggests Netflix wants to lock talent, hold continuity and build a repeatable medical franchise around Baek Kang Hyuk rather than run another one-off K-drama experiment.
Who is returning, who is new
- Ju Ji Hoon returns as surgeon Baek Kang Hyuk; he is also attached to Netflix’s Buy King, due in 2027.
- Choo Young Woo returns as Yang Jae Won, Baek Kang Hyuk’s first protégé.
- Yoon Kyung Ho returns as Han Yu Rim, now chief of planning and coordination at Hankuk National University Hospital.
- Jung Jae Kwang returns as anesthesiologist Park Gyeong Won.
- Jung Ye In joins as nurse Cheon Jang Mi, replacing Ha Young.
The recast and the fandom opportunity
Ha Young exits after a reported controversy involving her family and their alleged pro-Japanese ties. Into that slot comes Jung Ye In, a K-pop idol and Lovelyz member. That is not a like-for-like swap: it adds a music fandom to the existing K-drama audience, giving Netflix a built-in promotional layer it can activate before release.
Netflix’s synopsis says the next chapters will show the team facing “greater crises and unexpected circumstances” as Kang-hyuk works to “expand and stabilize an effective trauma system.”
What media planners should watch
For media planners and entertainment marketers, this is a franchise signal in two places. First, the two-season commitment lowers uncertainty for sponsorship windows, local-language campaigns and talent-led promotion. Second, the recast opens a measurable test of how much K-pop fandom moves viewership on an already proven title.
Watch whether Netflix schedules the two seasons close together, and whether the first teaser campaign leads with Jung Ye In’s fanbase or with the returning ensemble. Either choice tells you which audience Netflix thinks it needs to add.
Source: What’s on Netflix
