Double & Kiva: The Great Monster Wars

Wataru Kurenai, Kamen Rider Kiva, is looking forward to a new year in Yokai Academy alongside his beloved friends and harem. But an old foe reappears in order to shatter that happiness and his vengeance could be greater than one Kamen Rider can handle. Old rivalries flare up and a new super powered team up is born in this Sequel to Kamen Rider Chrome's Popular Rosario to Kiva.