Seo Kang-joon
Born October 12, 1993 · Gunpo, Gyeonggi, South Korea
Lee Seung-hwan (born October 12, 1993), known professionally as Seo Kang-joon, is a South Korean actor and former singer, who was a member of the group 5urprise. He gained recognition with his role in the television series Cheese in the Trap (2016) and has since starred in Are You Human? (2018), Watcher (2019), When The Weather Is Fine (2020), Grid (2022), Undercover High School (2025), and Boyfriend on Demand (2026).
Notable Appearances
More TV Shows
Roommate
Cunning Single Lady
What Happens to My Family?
When the Weather Is Fine
Good Doctor
Undercover High School
The Suspicious Housekeeper
Entertainer
Cheese in the Trap
Grid
Entourage
The Third Charm
WATCHER
To the Beautiful You
Melon Music Awards
After School: Lucky or Not
Idol Fever
To Be Continued
The Best Future
