Koichi Ishii | Koichi Zenigata | Koichi Wakata | Koichi Wajima | Koichi Sakamoto | Koichi Nakamura | Koichi Domoto | ''Ruddock with Koichi Tohei Sensei in Iidabashi dojo (photo by Henry Kono)'' | Koichi Yamaguchi (bicycle framebuilder) | Koichi Yamaguchi | Koichi Tohei | Kōichi Tōchika | Koichi Tanaka | Kōichi Tabuchi | Koichi Sasada | Koichi Ohata | Koichi Nakano | Kōichi Morita (songwriter) | Kōichi Morita | Koichi Kato |
Primarily working alongside director Koichi Mashimo at Bee Train animation studio, he's come on scene in his work with some notable productions by Bee Train including the anime adaption of Clamp's Tsubasa Chronicle and the third segment Field Test in Batman: Gotham Knight.