In the world known as Remnant they're humans and faunus. The faunus are treated with major discrimination do to the fact that they have the traits of animals and each faunus has a trait of a different animal. But there is one kind of breed of faunus that even causes the grimm to shake with fear. They are the Diclonius Faunus, they are believed to be a myth since I Diclonius Faunus birth rate is extremely low without a mother or father Diclonius...that was until the birth of the new Diclonius king: Kira Goodwitch