Torikago no Kaguya-hime

Synopsis

Kaguya has spent her days being scorned and tortured as the "Demon Princess." Since she was a child, Kaguya has had a strange power. This power was supposed to be the power to exterminate the monsters and demonic shadows that shake the country, but no one understood her and she lived with pain in her heart. Then Gion Takakatsu, the commander of the "Black Kites" who exterminate demonic shadows, visits Kaguya and asks to enter into a temporary marriage... (Source: Kadokawa, translated)