Kouen Ren

Kouen Ren (練紅炎, Ren Kōen) is the Kou Empire 's first Prince, he's the strongest general of the Empire, together with his two younger brothers Kouha and Koumei Ren.

Abilities
Kouen is the strongest general of the Kou Empire. He is the only person besides Sinbad, to capture more than one Dungeon, capturing three.