Behind the camera
- 2014Japan Animator ExpoKey Animation1 ep.
- 2011Hellsing: The DawnAnimation Director2 ep.
- 2008Rosario + VampireAnimation Director, Key Animation2 ep.
- 2007MinaKey Animation1 ep.
- 2006Red GardenAnimation Director, Key Animation3 ep.
- 2006Hellsing UltimateAnimation Director1 ep.
Also known as: Seo Kyung-Rock · Seo Kyoung-Rock · 서경옥 · 徐慶玉 · 徐慶緑