In a Den of Predators

AU Harem Story. In order to make sure the Yuuei Dynasty's greatest power is passed down to the next generation, Crown Prince Izuku is being arranged to marry Momo Yaoyorozu and maybe a few other women as well just to ensure there are royal heirs...Now this would be fine if his rabbit animal spirit didn't fear the predatory animal spirits of his ever growing Imperial Harem...