Ryu was warned of the dangers of the Dark Hadou, a foul energy that can overwelm a warrior and turn them into a heartless killing machine. But, Ryu's desire for fighting perfection seems to be drawing him down the path to the Dark Hadou and ultimately climax into a battle with a man named M. Bison. But Ryu has his best friend Ken and Rookie Interpol officer Chun-Li to see he his soul doesn't become corrupted forever.

Street Fighter Alpha was published in English by Udon Entertainment from June 5, 2007, to August 21, 2007. It was also released in Brazilian Portuguese by NewPOP Editora from December 2013 to April 2014.