At the age of 17, Hokuto learned that her elder brother was missing.
"Hokuto, find your brother and stop him before he steps in the path of the 'Ashura' ... and you shall embark on the Bushinryu tests ..." her godfather said to her.
So Hokuto set out to find her brother, who disappeared and was feared to be lost in state of dark confusion. She entered the fourth Street Fighter tournament, and there she met Kairi, her long lost brother. But he had already been consumed by the Ashura, which turned out to be the demon Akuma. Hokuto fought her brother, but she too was consumed by Akuma. Now the two siblings only hope relied on their sister, Nanase...