The primary antagonist and Kamui's dear friend, Fuuma is initially kind and gentle. He helps his father dutifully and dotes on his younger sister Kotori, excelling in high school sports. After Nataku attacks Kyogo and steals the first Shinken, Fuuma's dying father reveals that he is Kamui's twin star. Consequently, when Kamui chooses the Dragons of Heaven, Fuuma is forced to become a Dragon of Earth, immediately attacking Kamui. He proceeds to grant wishes to those he interacts with, often leading to their death or the death of a loved one.
In Tsubasa: Reservoir Chronicle, Fuuma is Seishirō's younger brother and a friend of Yuko Ichihara. He acts as the de facto leader of the people of the Tower. In reality, he is a treasure hunter who can traverse dimensions and frequently searches for artifacts at Yuko's request. He maintains friendly relations with the main characters in the series.
