A world where only dogs and cats exist. Dogs have seized the sole continent and built kingdoms, while cats roam the vast seas, raiding the dogs again and again. The two races despise each other and have long been at war… Jean, a boy born a dog but raised by cats, spends his days drifting from island to island with his adoptive father, Azur, and his mother, Rosa. His dream is simple: to one day find a place where the three of them can live together in peace. But fate has other plans…!? From master illustrator Ryo Sumika comes a grand maritime fantasy epic of non-human adventure!