Behind the camera
- 2002Arcade Gamer FubukiMusic4 ep.
- 1998Very Private LessonOriginal Music Composer2 ep.
- 1998Initial DOriginal Music Composer39 ep.
- 1997Sprite: Between Two WorldsMusic2 ep.
- 1996Angel DensetsuMusic2 ep.
- 1992The Wonderful Galaxy of OzMusic17 ep.
Also known as: Ryuuichi Katsumata · 勝又隆一