"I've always known him to be open about his scars, but there is some he doesn't speak of. Not even Ila knows about them..."

I did a quick doodle of the scars on Byeau's right face and back, he's an "old soldier" as it were. He doesn't speak of these scars and likely never will but he does not regret what he did and what led up to getting them, that is all he will ever say about it. Not even Ila, the woman he shares his soul with knows where these scars came from.