Maoujou de Oyasumi

Demon Lord Tasogare is holding Aurora Suya Rhys Kaymin, the princess of the human empire, hostage in a world where humans and demons coexist. He demands that people give him complete control over the globe, but people don't give in easily, so they send the hero Yuusha Akatsuki to free the captive. Suya Rhys spends her time imprisoned in the demon palace, often feeling exhausted despite the fact that she is unhurt. She struggles to sleep nonetheless because of the terrible host. The princess then starts her entertaining escapades as she makes an effort to become comfy and eventually fall asleep.