Seo Sumin's Filmography & Insta (feat Agent Kim Reactivated)

Actress Seo Sumin, a YouTuber and influencer with 300,000 views from a single video of her simply taking off her glasses and 300,000 followers, made a name for herself immediately upon her Netflix debut with “Agent Kim Reactivated,” hitting a 20% viewing rate and taking the No. 1 spot on Netflix.

Even before her debut, she caught attention for her innocent visual charm, turning down offers from several major entertainment agencies to become an idol and instead choosing the path of acting.

An aspiring theater and film major, she is Seo Su-min, the “Agent Kim Reactivated” actress who instantly proved why her face is a box-office guarantee.

Seo Sumin's Filmography & insta (feat Agent Kim Reactivated) — Seo Sumin’s Filmography & insta (feat Agent Kim Reactivated)

Seo Su-min’s Career History

Born February 12, 2007, in 2023 she appeared on the beauty creator channel “Haemin Seonsaeng,” where a video showing her transformation through bare-face makeup went viral online, racking up over 2.25 million views. After seeing the video, she received casting offers from several major entertainment agencies, including a proposal to join an idol girl group, which she turned down.

She explained her decision to pursue acting, saying, “I wasn’t confident in dancing or singing, so I decided to go into acting, which I had been interested in for a while.” She later opened her own personal YouTube channel in October 2024, and after posting short-form videos such as “Getting Comfortable with the Camera Without Glasses” and “A First Meeting That Wasn’t So Easy” in September 2025, she surpassed 100,000 subscribers with just three videos, earning YouTube’s Silver Play Button.

She signed an exclusive contract with Y1 Entertainment, an agency home to many actors, and for her debut role landed the part of Kim Min-ji — the teenage daughter of the main character Kim Bujang (played by So Ji-sub) — in the blockbuster SBS Friday-Saturday drama “Agent Kim Reactivated,” instantly rising to popularity.

In her debut role, she portrayed a nuanced range of emotions beyond what’s expected of a newcomer — showing a prickly attitude toward her father, shyness in front of her crush, standing firm against someone bullying her, yet breaking down emotionally when her father kneels down for her sake — already building anticipation for her next project. As a side note, she is a fan of the band DAY6 and enjoys listening to music by the band Silica Gel.

※ The story behind Seo Su-min’s agency casting

※ The YouTube Shorts video with 3 million views

Actress Seo Sumin’s Filmography

Drama: Agent Kim Reactivated (2026, SBS, as Kim Min-ji)

She made her acting debut through the SBS Friday-Saturday drama “Agent Kim Reactivated,” which first aired on June 26, 2026. Based on a webtoon of the same name, the series follows an ordinary father who gets caught up in a dangerous fight to find his missing daughter. She played Kim Min-ji, the only daughter — a high school student — of the main character Kim Bujang (played by So Ji-sub).

Although she is still a newcomer and this is her debut role, so she wasn’t responsible for carrying the entire drama, she fully delivered as a scene-stealer and became one of the key contributors to the show’s rise to No. 1 on Netflix. Thanks to this, she is already being noted as having one of the flashiest starts among actors who debuted in the 2020s, with attention already turning to her next project.

Seo Su-min’s Awards and Major Career Highlights

2025: Signed exclusive contract with Y1 Entertainment
July 2026: Debuted with “Agent Kim Reactivated“

Seen as another “born to be a star” following in the footsteps of Go Youn-jung, this actress has already left a strong impression with her debut role, thanks to her clear, natural charm combined with a rookie’s appeal. Keep an eye on her going forward.