I don't know about that. Maybe I'm a bit more laid back, but the way he interacted with the pc wasn't really that offensive to me. And while he might have a slight death wish, I don't really consider that a bad thing depending on the scenarios. I personally wouldn't mind dying chasing after glory or honor, but I guess it depends on what you consider a good death. I also respect his discipline. Not many people are capable of sticking to a regiment or a schedule, and the fact that he can is pretty impressive.
Also, poetry is subjective.
I am still holding off on Floof Den until I hit my arbitrary goal of having 50 kits with Kiyoko, but the material I've seen of Nakano is that he's not BAD per se. Just constantly trying to gain recognition from people who don't give a shit about him (his title is sadly an empty one given he only has seven people under his command and is too proud to ask for help).
I feel like Nakano fills the role of Inari Kinu on the Hime route in a way for that reason. He's stubborn to a fault and trapped by his ideals. So I'm hoping end game will be that Hime Kinu will be the Hitoshi to him in helping him out of that mindset. But just my specularion from spoilers I've snooped, heh.