A long time ago, before the worlds came about, a prophecy
was told about a war. A war for the χ-blade, a single key that unlocked the way to
Kingdom Hearts. Those who sought for it created an image of it, calling it a
Keyblade and used it to in order to bring about a war that brought about
darkness, taking over the World. According to the legends, Kingdom Hearts
vanished and the χ-blade was destroyed, breaking into seven pieces of light and
thirteen pieces of darkness. Yet no one knew the whole truth.
Once the
Keyblade war was over, the immortal ones decided to lock away Kingdom Hearts,
locking it away within a non-existent realm where the keyhole to Kingdom Hearts
was separated into three fragments. The three fragments took form of a single
soul and attached themselves onto a maiden who was guarded buy a Keyblade
wielder who held a pure heart.
One day,
a man set foot upon the non-existent realm and caused a war in order to reform
the χ-blade and gain access to the World. As he and the last of the warriors of
the non-existent realm stood before the entrance of Kingdom Hearts, the
gathered fragments from the passed maidens aided him, reforming together to
recreate the keyhole. Sacrificing himself, he sealed the world once again,
throwing the visitor from the world. Then the keyhole severed into four
fragments and scattered across the realms, awaiting for the day for the chosen
maidens to host them again. However, now that the immortal ones are well aware
of the dangers that took place during the war, entrusting keyblade wielders
with the heavy task of protecting the fragments, guardians were created in
order to keep their existence safe. For when the time came for the keyblade war
to start again, keybladers would have to keep the fragments of the χ-blade safe
in order to be sure the World would never be reached again.