Highest rated as cast or director
Are You Human?
2018 · 1 Season
Undercover High School
2025 · 1 Season
When the Weather Is Fine
2020 · 1 Season
Cunning Single Lady
2014 · 1 Season
Cheese in the Trap
2016 · 1 Season
Biography
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).
Acted in 32
2020s
- 2026
- 2025
- 2022
- 2021
Love Refresh
Seo Nam Joo · 3 episodes
- 2020
2010s
- 2019
- 2018
- 2017
Idol Fever
Do Yun's older brother · 10 episodes
- 2016
- 2015
Summer Snow
Sang-gyu
To Be Continued
Ah-rin's elder brother · 12 episodes
- 2014
The Best Future
Choi Go · 5 episodes
- 2013
Haneuljae’s Murder
尹河
After School: Lucky or Not
TV
- 2012
- 2011
- 2010
2000s
- 2009
Melon Music Awards
Messenger · 1 episode
Appearances4
2020s
- 2022
2010s
- 2014
Bomi's Room
Self
- 2013
