 If you liked
Overlord III
|
 ...then you might like
Tensei shitara Slime Datta Ken 2nd Season
|
Both have OP non-human MC who doesn't really care about humans, but about their own people who are different kinds of monsters.
Both are parts of franchises and have similar developments in terms of their own stories - one becomes a Demon Lord and the other one shows off his ''true strength'' (more like just a part of it) to humans.
They both decided to go into a war with human nations to make their nation or to strengthen their nation.