[If this were any less serious, Kouha would scoff at that comment. Instead, he gives Koumei a sharp look, not angry or disappointed at him, but full of denial, anyway.]

Like hell it's your fault! If you were blind, so were the rest of us.

[Koumei may be the strategist, but that doesn't mean Kouha can go resting on his laurels and let everyone else take care of the thinking. Apparently, though, that's exactly what he did, and that fact burns. It burns enough that Kouha has to pace, just to keep from feeling like he'll explode from it.]

I don't get how you can be so calm when we're talking about losing everything. Our men, our family... I'm not gonna just lay down and accept that, Brother Mei! I'm not gonna let a man who'd do that to our people become emperor!

[He shakes his head hard enough to make himself dizzy. The family comes first, and this is a Ren trait that almost all of them have to varying degrees. The empire is their family's work, their reason for doing everything they do, and Kouha just can't let it go without seeing the hopelessness for himself, in person.]

I'm not gonna let any of you die, even if I do.