I Can Summon Tanks in a Magical World!

From high-dimensional beings capable of being mass-produced indefinitely, from dinosaur farming to deep-space starship assembly lines, their intelligence was forcibly reduced, turning them into livestock that worked and studied alongside indigenous people.

It looks pretty good, but there aren't enough of them.

Why did you write about the protagonist's frustration at studying in another empire? It's full of malice towards him.