|Epithet||Tiger of Chu|
So far he has only been mentioned and never made a real appearance.
Nothing is known about Kou En's personality as he yet makes an appearance in the story line.
When Kan Mei was still a young general, he served Kou En in his army as his deputy general.
The King of Chu, Kou Retsu, was considering to send Kou En after Kan Mei's failure. But Ren Pa recommended not to do this, since the Chu would have to break through the defenses and would not make it in time, in order to make an impact.
Little is known about Kou En's abilities but it is indicated that he is an exceptional general. He is now currently the first in command of Chu Military. He was also very deductive, as Ri En qouted him saying: "In spite of Chu being the state that spans the most land, it has yet to utilize the full potential of its resources."