Andriasang relays the information from Namco Bandai, which claims that CyberConnect2 has been involved with the project since its inception, providing the storyboards and the motion-capture shoots that -- presumably -- explain all the eternally immolated souls and so forth. We imagine CyberConnect2's taken Namco Bandai's draft script and done a find-and-delete on anything that seemed even vaguely plausible. (You have seen Asura's Wrath, right?)
If it's crazy enough, it could be even be a hit for Hollywood and its bizarre compulsion to adapt the game genre where story is of least importance. C'mon, they even did King of Fighters.