Seo Woo Jin is currently becoming a hot topic online after many international viewers suddenly realized that the adorable little girl from the popular Korean drama Bye bye, mom! it was actually played by a boy.
The discussion resurfaced recently thanks to Seo Woo Jin’s appearance in the trending fantasy comedy series The WONDERfoolswhich attracted global attention for its unique supernatural plot and star-studded cast including Park Eun Bin, Cha Eun Woo, Kim Hae Sook and Choi Dae Hoon.
In The WONDERfoolsSeo Woo Jin plays a mysterious immortal child connected to the male protagonist Lee Un Jeong. However, once viewers connected him to his previous role in Bye bye, mom!social media quickly exploded with disbelief.
In the 2020 drama, Seo Woo Jin played Jo Seo Woo, the young daughter of Cha Yu Ri, played by Kim Tae Hee.
At the time, many viewers sincerely believed that the child actor was a little girl due to her soft facial features, long hair style, and incredibly natural performance.

Even now, countless viewers admit they still can’t believe the sweet daughter of Bye bye, mom! and the boy who appears The WONDERfools they are actually the same person.
Many netizens joked online: “I’ve rubbed my eyes hundreds of times and I still can’t recognize it.”
Others praised Seo Woo Jin’s visual and acting qualities, saying that she perfectly suited Kim Tae Hee’s appearance so convincingly that the chemistry between mother and daughter seemed completely real on screen.

According to fans, this is one of the reasons why Seo Woo Jin was chosen Bye bye, mom! it was precisely because her facial features resembled Kim Tae Hee’s elegant images so much.
Despite being only 10 years old, Seo Woo Jin already has an impressive acting resume and is considered one of Korea’s busiest child actors.
Over the years, he has appeared in numerous major productions alongside top Korean stars.
His projects include:
- The devil judge played by Ji Sung
- Doctor Slump with Park Hyung Sik and Park Shin Hye
- Under the queen’s umbrella played by Kim Hye Soo
- And many other high profile Korean productions.

Fans particularly praise Seo Woo Jin for his emotional acting skills, expressive eyes, and ability to naturally adapt to both male and female child roles without making the performances awkward or artificial.
AS The WONDERfools continues to gain popularity internationally, Seo Woo Jin once again proves why he is considered one of the most outstanding young actors in the Korean entertainment industry today.

