Kurogane (Japanese: 黒鋼), born Yōō (Japanese: 鷹王) in the manga and Haganemaru (Japanese: 鋼丸) in the anime, is a fictional character from Clamp's manga series Tsubasa: Reservoir Chronicle. Kurogane is a poor tempered ninja from Japan who is obsessed with fighting. His lady, Princess Tomoyo, exiles him to modern Japan where Kurogane joins with the wizard Fai D. Flowright and two teenagers known as Syaoran and Sakura who are in the need of travelling different dimensions. The witch Yuko Ichihara gives them such power at the cost of their most treasured item with Kurogane giving his sword. Across the narrative, Kurogane bonds with the other travelers and learns that his parents were killed by the same people who attacked Syaoran and Sakura's country, making him look for revenge. He also makes cameos in other Clamp's works.
