The Kurogane Clan, Tetsu established the Kurogane when trying to unify the land of iron, every samurai within the Land of Iron will carry the Kurogane last name.
Royal Family -- The royal family name in future chapters will be Tetsu, Signifying the Land of Iron
(Think of Kurogane as a substitute for Samurai)
Kurogane Skills Currently: Dance of the Crescent Moon. (Rapid Slashes)