The male protagonist of Digimon Story: Sunburst, the second installment in the Digimon Story series. Koh is a Tamer from the organization named Light Fang, and his counterpart is Sayo from Night Claw. Koh's Partner Digimon is Coronamon, whose Ultimate form is Apollomon of the Olympos XII.
Unlike Sayo, Koh hasn't made any appearances outside of the Digimon Story continuity and as an opponent in Super Xros Wars.