The DOA Story has been added to the features section of Team NINJA's Dead or Alive 6 official website. They also add summaries of all the other DOA narratives from beginning to present... let's take a look then. Commentary will be included with the current overviews and will hopefully help clarify things.
Why the need for clarification? Because Dead or Alive: Dimensions came in and confused us with a compilation of all games that added scenes to the original tale of DOA. Hayashi made it seem like these scenes were official, but many players want to see DOAD as non-canon. Though it would be more constructive to highlight all of the differences in another post, and only focus on a few key ones here in this break-down that pertain to the information we're given now.
The way this information is detailed is obviously confusing, but the "so-called genius" could be referring to Lisa or Donovan. Seems likely that we will learn more about his character than we ever have before in Dead or Alive 6. Maybe he will even be the final boss that will hopefully be playable like: Raidou, Alpha and Tengu have been.
Dead or Alive 1
Seems pretty vague considering we know this story. Raidou is Shiden's evil brother, Raidou steals moves including the Torn Sky Blast from his nephew Hayate, and then destroys him with it breaking his back, putting him in a coma giving him amnesia plus spinal nerve damage. Of course Kasumi runs away from her leadership responsibilities to seek answers, enters the tournament and kills Raidou successfully.
Though DOAD adds one of those additional scenes that was extremely controversial to players. After years of thinking this was Kasumi's story and road, we find out that it was actually Hayabusa assisting Kasumi to help defeat Raidou.
A reason a fan of the original game would hate this added moment is that Hayabusa figuratively and literally steals Kasumi's thunder. Her fiery passion that ended Dead or Alive 1 locked her into being the main character of the franchise... and proved that she was more than just some runaway ninja.
Dead or Alive 2
Part of this summary is going with the DOAD story-structure with Kasumi Alpha being a possessive clone who wasn't described as having a weird desire for Hayate in the original storyline. Also worth mentioning is that Project Epsilon actually preceded Project Alpha and failed with Kasumi having superior genes.
The evil that Hayabusa speaks of is Bankotsubo, a wicked Tengu that came out from the misty mountaintops after the evil Victor Donovan took over the second tournament. Hayabusa kills the majestic demon and Genfu salvages his nose to save his granddaughter.
Dead or Alive 3
Unlike the summary for Dead or Alive 2, this one follows the original story of Dead or Alive 3 -- Genra being experimented on. DOAD makes it seem like Genra was evil from the start. At this point you are probably wondering, well which story-line is official then?
Dead or Alive 4
How we saw character associations post-DOA4 including Fame's mistresses
Dead or Alive 5
The 5th Dead or Alive story also follows some paths from DOAD including Raidou's death. If you read his biography on the site it mentions how he is resurrected from a fatal explosion. An explosion that never happened before DOAD. Team NINJA should really observe and study all of the story-line content ever released so that DOA6 can make perfect sense to all players.
It's hard to say if the team wanted to write away the lost pages or maybe they thought or have seen little in the guides or manuals. Either way, there are some jumbled ideas provided in these summaries, but we deserve to know if the story is going to follow the original source material or if DOAD is the foundation of DOA's narrative as a whole.