Fuuma Monou

The primary antagonist and Kamui's dear friend. Fuuma is initially kind and gentle. He helps his father dutifully and dotes upon his younger sister Kotori, and excels at high-school sports. After Nataku attacks Kyogo and steals the first Shinken, Fuuma's dying father tells him that he is Kamui's twin star.

In Tsubasa: Reservoir Chronicle