Seo Kang Joon is making a return to television with a brand-new romance drama called Relationship Other Than Yours. This news comes after he finished his last project, Undercover High School, earlier in 2025. Fans are excited to see him back in a very different role from the action-comedy spy character he played last time.
On November 21, OSEN reported that the 32-year-old actor was approached for a role in the upcoming romance drama. In Relationship Other Than Yours, Seo Kang Joon will play Nam Goong Ho, an office worker whose life is turned upside down when his long-term relationship faces unexpected turmoil.
It focuses on the emotional ups and downs and cracks that long-time couples face, especially when they are on the brink of marriage and someone new comes into their lives.
This new drama is particularly noteworthy because it comes right after Undercover High School. Seo Kang Joon played Jung Hae Seong, a National Intelligence Service agent who goes undercover as a high school student.
That series combined comedy, mystery, and action, and aired on MBC from February 21 to March 29, 2025. It was his first acting role after completing his mandatory military service in May 2023, and it earned a lot of attention for his performance.
Now, with Relationship Other Than Yours, Seo is moving from a multi-genre action-comedy into a realistic romance. Fans are already looking forward to seeing how he will portray Nam Goong Ho, a character caught in an unexpected emotional vortex.
After his strong performance in Undercover High School, expectations are high that Seo Kang Joon will deliver another memorable role. His past acting credits include Grid, Idol Fever, Cheese In The Trap, and more.