Name: Kurogane ("Black Steel")

Age: Unknown (but it is certain that he's an adult)

Other Names: "the ninja", "Kuro-sama", "Kuro-chi", "Kuro-chan", "Kuro-pipi", "Kuro-puppy", "Kuro-tan", "Kuro-wanko", "Kuro-Mii", "Kuro-run", and, well, you get the point . . .

Romantic Interests: Princess Tomoyo (but it might just be his loyalty)

Other Facts: His home is currently in feudal Nihon (Japan). He was under Princess Tomoyo's service, and works as a ninja for her protection. Kurogane deems himself very strong, and he usually kills his rivals easily, and also "does away" with his comrades, even though Princess Tomoyo has asked him many time to show some mercy. His prized possession is his katana (sword) named "Ginryuu," which means "silver dragon."
Kurogane is fairly quick-tempered and overly aggressive, which causes Princess Tomoyo to place a curse on him and send him to the Dimensional Witch, Yuuko. His curse is that if he commits unnecessary homicide, his strength will decrease. His curse was never activated until he was forced to kill King Ashura, the ruler of Fay D. Flourite's world. Just as they were about to leave Celes, Kurogane cuts off his own left arm as "sacrifice" for Fay. Later, he arrives back in his own world, Japan (Nihon). He, along with many others, is left behind as the real Syaoran ventures into the dream world to recover Sakura's soul.