Kurogane

Kurogane (黒鋼, "Black Steel") is one of the companions of Syaoran in Tsubasa: Reservoir Chronicle. A ninja from feudal Japan (Nihon), he sports a black outfit (which is part of the reason why Fai D. Flowright calls him "Mr. Black", additionally the first character of his name means "black") and he carries around a katana named "Ginryū" (銀竜, "Ginryū"? meaning "Silver Dragon"). He is one of the two original main characters in Tsubasa: Reservoir Chronicle, not having coming from any previous CLAMP work, the other being Fai D. Flowright.