Seo Kang-joon

Lee Seunghwan born October 12 1993 known professionally as Seo Kangjoon 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