Saiah The guardian of the seventh key

It is said that there are seven keys in the Universe which by coming together one can unlock a magnificent power that will unlock the whole self. Those keys are surrounded by demons and creatures that are constantly trying to destroy them, but each key has its own guardian who is waiting for the chosen one. She is Saiah, the guardian of the seventh key. Only the bravest warriors will be able to meet the truth behind the myth.