From Denial to Confirmation: Lovelyz’s Jeong Yein Steps Into Ha Young’s Scrubs in “The Trauma Code: Heroes on Call”

Sometimes a rumor turns out to be true, even after it was denied. That's exactly what happened with Jeong Yein. The Lovelyz member has now been officially confirmed to join…

By Reetam Bodhak

September 29, 2026

3 min read

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Sometimes a rumor turns out to be true, even after it was denied. That’s exactly what happened with Jeong Yein. The Lovelyz member has now been officially confirmed to join Netflix’s “The Trauma Code: Heroes on Call,” taking over a role that fans had been watching closely.

The Trauma Code: Heroes on Call- Timeline

The story unfolded over a few days, and it’s worth laying out so the confusion makes sense.

Date	What Happened
Earlier	Ha Young stepped down from the new seasons voluntarily
Auditions	Held to find her successor
September 23	Reports said Jeong Yein would play Cheon Jang Mi; Netflix and her agency denied it
September 29	MyDaily reported a first meeting and script reading for key cast
September 29	Netflix confirmed Jeong Yein as Ha Young’s successor

The Confirmation

After the September 29 reports, a Netflix representative stated that Jeong Yein has indeed been selected as the successor to Ha Young for the new seasons. Earlier denials had left many fans unsure, so the official word settles the matter. It also came on the same day the cast reportedly gathered for a brief script reading, followed by a meal together.

The Role and the Show?

According to the September 23 report, Jeong Yein will play Cheon Jang Mi in the second and third seasons. The first season, released last year, follows genius trauma surgeon Baek Kang Hyuk (Ju Ji Hoon) as he works to revive a struggling Severe Trauma Care team. Following Ha Young’s decision to step down, auditions were held, and Jeong Yein was ultimately chosen.

Who Is Jeong Yein?

Jeong Yein debuted as a member of the girl group Lovelyz, and she has since been expanding her acting range through various projects and stage productions. Her acting path began with the 2017 web drama “The Blue Sea” and continued with tvN’s “Criminal Minds.” If you’d like more background on her group, Lovelyz on Wikipedia offers a helpful overview.

Why This Casting Matters?

Replacing an actress in a returning role is never easy, especially when audiences already know the character. The audition process suggests the production team wanted to find the right fit rather than rush a choice. Jeong Yein’s stage and drama experience gives her a solid foundation, and fans will now be curious to see how she interprets the role in a high-pressure medical setting.

What’s Next?

There’s no broadcast schedule yet, and the drama’s official updates are still to come. In the meantime, you can watch Jeong Yein in “The Blue Sea” on Viki. For more casting news and K-drama updates, browse Technosports, or check our latest K-drama coverage.