Story:

This manga is about an orphan boy who wants to be a General. The story revolves around the war most of the time
Compared to your average shonen this manga contains no fanservice, no ridiculous power-ups, fights focuses more or less on tactics.

Characters:
My only complaint is that the main character Shin follow the usual stupid-kid-hard-working-i-wanna-be-something type like Naruto or Asta from Black Clover which is not bad but simply way too overused.

Art:
It's not impressive at first glance but with time the art really improved, it's easy to understand what is happening on the battlefield.

If you're tired of cliché and fanservice and like shonen manga, this manga is for you.