Jejuseo Elementary School (제주서초등학교, 2013-2014),
Pohang Steelers U15 (포항제철중학교, 2015-2017),
Pohang Steelers U18 (포항제철고등학교, 2018-2020)
#12 Ryun-sung Kim
Pohang Steelers
K League 1 League level: First Tier Joined: Jan 1, 2021 Contract expires: Dec 31, 2025
K League 1 League level: First Tier Joined: Jan 1, 2021 Contract expires: Dec 31, 2025
Pohang Steelers FC
- Date of birth/Age: Jun 4, 2002 (22)
- Place of birth: ---, Jeju
- Citizenship: Korea, South
- Height: 1,80 m
- Position: Left-Back
- Former International: South Korea U23
- Caps/Goals: 0 / 0