Pro-demon, anti-human propaganda
So far, the humans have been portrayed as nothing but terrible, prejudiced, shifty characters. But what about the demons? They attacked the humans unprompted, and are also shown to be actively condescending towards humans, (example: lieselotte's maid).
Also, we're supposed to root for lieselotte? When she has never been shown to oppose the atrocities her own people commit, and instead actively supported the war by being an elite member of the army herself. Also, the peace treaty did not even come from a place of sympathy for the suffering of both humans and demons from the war, but instead her own selfish yearning for the hero.
All in all, 1/10 story for something that could have been atleast 7/10.