...I don't get it. What's so edgy about the rape scene? It's not in your face, doesn't last for long, and isn't really graphic. It's just there for a hot minute to show what the guys are up to in their down time. I mean...it's rape, and rape is bad. But it doesn't really ruin the manga or make it seem lack luster, just give a depiction of who the people are.
One thing I feel is a bit of a plot hole is a noble decreasing the security around his land for pocket change. These guys are feudal lords, their right to power is in their armies. Their ability to collect taxes...is via their armies. What would happen if a peasant just said "no"? And what if a group of his peers also said "no"? How are you going to get your money then?
I feel that this part could've been rewritten even if just a little bit.