It has been a year since the Demon King was defeated. Belphegor, a former high-ranking officer in the Demon King’s army, had been living a life of debauchery and idleness. Unable to bear witness to this any longer, his aide, Media, issues an order to Belphegor.
“Belphegor, go kill the hero.”
Reluctantly heading to the human world, Belphegor was looking for an opportunity to assassinate the hero when he accidentally discovered the hero’s secret... The hero wasn’t actually a man, but a woman?! Having learned the hero’s secret, Belphegor proposed a deal, promising to lift the curse, and so began their awkward journey together.(Source: MrBlue, translated)
— Description from AniList community (anilist.co).
