Kingdom Hearts: Diablo

Kingdom Hearts: Diablo is an upcoming fan-made story crossover between the Kingdom Hearts series and the Diablo series created by Blizzard Entertainment. It is a sequel to the overall Diablo series and is set sometime prior to Kingdom Hearts III. It explores the possibility if the Kingdom Hearts and the Diablo universes where in fact the same and the χ-blade, along with the other keyblades, were created as part of a war between angels and demons.

Plot
Nothing is known of the plot except that it will explore that the Prime evil known as Diablo was imprisoned due to the use of the χ-blade and that Xehanort's plan to start a second keyblade war would release Diablo and the heroes of the Kingdom Hearts series must prevent the rouge keyblade master from releasing the ancient lord of terror.

Canon explanations
The story will explain certain characters with certain abilities in order to help connect the two franchises.
 * The Princesses of Heart would be the decendants of the archangels.
 * keyblade weldiers and masters would be decendants of angels.
 * Sora would be the decendant of the hero in either Diablo II or Diablo III.
 * Riku and Terra would be decendants of an angel and one of the prime evils (Baal or DIablo for the prime evils).