Se-jin·Kim is a 21-year-old professional football player from PRK. At the international level, he represents Korea DPR U20. He plays primarily as a Midfield. He stands at 177cm tall and weighs 65kg.

Across 3 appearances in the AFC U20 Asian Cup 2024-2025, Se-jin·Kim registered 0 goals and 0 assists, while completing 7 key passes out of 64 total passes with a passing accuracy of 14.