Equestria Girls & The King of the Night of Monsters: Kiva

Twenty-five thousand years after the disappearance of his father, King Leonidas, Shu Kurenai Tempest lives in an famous "Haunted Beach Mansion" where he has another identity as Kamen Rider Kiva to take down rogue life-draining monsters called Fangires, his own kind, with his concubines, including the Dazzlebooms, and fellow monsters by his side.