Key takeaways
- MyDaily reported on September 23 that Jeong Yein would replace Ha Young as Cheon Jang Mi in The Trauma Code Seasons 2 and 3.
- Ha Young exited the series following controversy surrounding her family's alleged pro-Japanese ties, prompting the production to conduct auditions.
- Jeong Yein's agency SUBLIME denied the report, while Netflix stated casting discussions are ongoing with no confirmation yet.
- Production for both seasons is scheduled to begin next month with back-to-back filming.
On September 23, MyDaily reported that Lovelyz member Jeong Yein would take over the role of Cheon Jang Mi in “The Trauma Code: Heroes on Call” Seasons 2 and 3. According to the report, the production team conducted auditions to fill the vacancy left by Ha Young and selected Jeong Yein for the position.
The Casting Report
About the Role
Cheon Jang Mi functions as a key member of the hospital’s Severe Trauma Care team in the drama. The character operates within a close-knit ensemble, making the casting process a priority for the production. MyDaily’s report identified Jeong Yein as the selected candidate following a series of auditions designed to identify the right performer for Seasons 2 and 3.
The Audition Process
The production team organized formal auditions to fill the vacancy, a process that included multiple candidates before resulting in Jeong Yein’s selection. Rather than offering the role directly to an available performer, the team invested time in evaluating options that could best serve the character and the ensemble dynamic going forward.

Ha Young’s Departure
Ha Young stepped down from the series following controversy surrounding her family’s alleged pro-Japanese ties. Her exit created an immediate need for the production to identify and select a replacement for the upcoming seasons. The timing of her departure, coupled with the production schedule, accelerated the timeline for completing the casting process.
Official Responses and Denials
SUBLIME’s Statement on the Report
When asked about the MyDaily report, Jeong Yein’s agency SUBLIME provided a statement that directly contradicted the news outlet’s account. The agency said: “There have been no discussions regarding her appearance in ‘The Trauma Code: Heroes on Call.’” This direct denial raised questions about the accuracy of the casting report and the actual status of Jeong Yein’s involvement with the project.
Netflix’s More Cautious Commentary
The streaming platform carrying the drama offered a different perspective on the situation. A Netflix representative stated: “Casting discussions are currently underway. Nothing has been confirmed yet.” This response suggests that while the production team is actively working on filling the Cheon Jang Mi role, the process remains incomplete and no performer has been officially announced.
The Trauma Code Series Overview
Plot and Lead Character
“The Trauma Code: Heroes on Call” debuted last year with a medical drama premise centered on crisis intervention and team dynamics. The series follows Baek Kang Hyuk, a surgeon of exceptional skill portrayed by actor Ju Ji Hoon, as he leads efforts to energize a hospital department. The show emphasizes both individual character development and the relationships that develop within the Severe Trauma Care team.
The Supporting Cast and Ensemble
Surrounding Ju Ji Hoon’s lead character is an ensemble including Yang Jae Won (Choo Young Woo), Han Yu Rim (Yoon Kyung Ho), and Park Gyeong Won (Jeong Jae Kwang). Each performer contributes specific dynamics to the team, and their character interactions drive portions of the drama’s emotional and narrative weight. The Cheon Jang Mi role integrates into this structure as a core team member whose presence matters to the story’s progression.
Production Timeline and Next Steps
Seasons 2 and 3 will be filmed in a back-to-back production schedule, allowing the creative team to maintain narrative momentum and character continuity. Production is scheduled to begin next month, imposing a compressed timeline on all remaining casting decisions. Final casting announcements should materialize within weeks as the October start date approaches. Any official confirmation of Jeong Yein’s casting—or an announcement identifying whichever performer ultimately takes the role—should become public as the production date draws closer.
Frequently Asked Questions
Who is reported to replace Ha Young in The Trauma Code?
Lovelyz member Jeong Yein is reported by MyDaily to take on the role of Cheon Jang Mi in Seasons 2 and 3, though neither her agency SUBLIME nor Netflix have confirmed the casting.
Why did Ha Young leave The Trauma Code?
Ha Young departed the drama following controversy surrounding her family's alleged pro-Japanese ties.
When does The Trauma Code Season 2 production begin?
Production for Seasons 2 and 3 is scheduled to begin next month and will involve back-to-back filming of both seasons.