User blog comment:Forrestib/Crossover/@comment-25555436-20141220042621/@comment-5041507-20141220052116

Indeed. Kingdom Hearts, as I understand it, is much like Once Upon A Time in the respect that it isn't Canon for anything except itself. But other things can still be Canon for it. It borrows elements from many different sources without taking all of any of them, which makes it a strange mix between a transit crossover and an amalgam.