Youta Kogetsu

Youta Kogetsu is a powerful fox spirit (ayakashi) from the prestigious and wealthy "Fox" clan, one of the three major spirit races. He dotes on his bride, Karin Shinonome (the younger sister of the protagonist, Yuzu), with an absolute and blind devotion, prepared to do anything to grant her every wish. In the early stages of the story, he acts as an antagonistic force toward Yuzu, aiding and abetting Karin's arrogant behavior and looking down on Yuzu because of Karin's deep jealousy. Despite knowing the extreme risk of defying the supreme authority of the Ogre clan's next head, Reiya Kiryuin, Youta's inability to refuse Karin's demands drives him to oppose Reiya, demonstrating his obsessive, single-minded dedication to his bride at any cost.