Short answers, pulled from the story.
A.P.P.P. produced Street Fighter Alpha: Generations in 2005 for the English-language market alone. Manga Entertainment released this anime film to Western audiences while Japan saw no official theatrical run.
The movie did not appear on Japanese shelves until 2009 as a bonus feature inside the DVD and Blu-ray of Street Fighter: The Legend of Chun-Li. This delay created a unique situation where the film existed only outside its home country for four years.
An old man named Fuka later explained that the Satsui no Hadou is an ancient evil life force dwelling within certain fighters. He told Ken Masters that this power grows stronger as it is exploited until it consumes the host completely.
Yasuyuki Kase voiced Ryu in Japanese while Richard Cansino provided the English voice for the character. Takeshi Aono played the Old Master in Japan and Simon Prescott handled the English version.
Street Fighter Alpha: Generations earned a 52% rotten score on Rotten Tomatoes compared to its predecessor. Critics found the film less successful than previous entries in the franchise.