The manga is inferior to the novel but is still fine, I like it because is a after-isekai story.
The last fight was dumb, the artist made it longer than necessary as MC could finish it at any time, and as it ends before the pop up "exp gained" and the hero boldy claims that there is no need to check for a corpse I fear a dumb sub plot that wasn't there originally coming up.
There should not be exp from enemies of our world but still...checking the defeated body is normal procedure.