I'd say it's partly due to the peculiar narration centered around Punpun, but really the manga is worth reading for the way it subverts the medium alone.
That's probably it. I don't know if this will change later down the road, but given the fact the protagonist is depicted as a penguin of all things, I'm not anchored to that character alone, so my experience is really, more than with any other manga I can think of, as a bystander. If that makes any sense at all. I'm only a few chapters in though. Gonna continue reading tomorrow.
I think the mangaka is going to slow down on Shin's exponential soldier units increase and instead focus Shin on other missions outside of Qin (him leading a campaign)
I also fear in the future that Kyoukai could follow a similar scenario comparable to that other female general that Ouki loved
I'd be quite happy if the Hi Shin Unit directly under Shin's command numbered no more than 10k. I've always enjoyed the fact they're a bunch of marauding badasses that pretty go where they please unless they have orders to follow. I also think he'll be allowed to direct a campaign down the line, which should be interesting if that comes to pass. His talent as a natural-type general awoke during the Coalition War Arc in such an awesome way, I can't wait to see how much he can grow.
I think Kyō Kai is pretty safe in terms of surviving till the very end. She's had some very near death experiences, almost too many for her to actually die now.
That being said, the Shin we saw in chapter 1 seems considerably older and hardened than current Shin, so I guess he could still lose someone important to him. The closest people to him right now are Ka Ryō Ten, Ei Sei and Kyō Kai. I'm thinking it might be a little too on the nose if he lost Kyō Kai like Ō Ki lost Kyō. I would at least expect Kyō Kai to reach the rank of general if she is going to die, by which time whatever it is she has with Shin will probably, I hope, materialise into something more substantial.