Have a feeling this might be a bad idea to try out. But considering Organization XIII could make paste out of Akatsuki from the thread I made a while back, screw it. Here are battle conditions:
Battle Area: Keyblade Graveyatd
Distance Apart: 15 yards
Conditions: All members of both sides are involved and in character, yet are willing to kill.
Taking this in account, which faction do you think can prevail in this match?