Manga is terrible, sure, but that just means I get to complain more in the comments! Honestly, why is he expected to be an outstanding combatant, and field commander, and lord, at like 10 years old? Any one of those tasks is difficult in itself, and to a certain extent they are even contradictory. I mean, any time you are fighting yourself is time you are not actually commanding the larger battle. And why would you need to be a field commander, when you can delegate that? After all, if you were to split your forces, someone else would have to command those other troops. So the idea of delegating field command is already there. This whole thing of forcing him to do something he's not good at, at an age that he should be too young for (we'll ignore he's 35, since the author is too), is just pointless drama. I mean, if any of those soldiers actually had any trouble kicking his ass, they should be fired from the army. He needs just enough skill to not embarrass himself, he doesn't need to know how to fight himself if he has good retainers.