Tokyo (Japan) - The President and Chief Operating Officer at game development company Koei has resigned. Kiyoshi Komatsu will leave the company after more than five years as CEO "for personal reasons".

Koei has a main focus in the Japanese market, but some of its titles have become top sellers in the US. In his reign, Komatsu oversaw games like Altelier Iris and Disgaea. The company is probably best known for its long-running Dynasty Warriors series.

Komatsu will be replaced by Kenji Matsubara, who is currently the head of the company’s mobile software division.