Mawangnimeun Jukgosipeo

A listless Demon Queen falls in love with a human. After breaking a treaty and waging war against the demons, humanity suffered a crushing defeat. Civilization has been destroyed, and demons are now the ruling species. At the very top, above all others, is the Demon Queen. But the Demon Queen is tired. In fact, she only has one wish: to die!

(Source: Manta)