Kingdom Hearts

Kingdom Hearts is one of the major objects in the Kingdom Hearts universe. It is the heart of all worlds, and the source of great power and wisdom.

Kingdom Hearts

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The Door to Darkness

In the first game, Xehanort's Heartless as well as the horde of Disney villains led by Maleficent, seek out Kingdom Hearts. Both want to draw out the darkness that surrounded it, in order to gain immeasurable power and knowledge.

To accomplish this, Maleficent searches for the Seven Princesses of Heart. These maidens hold hearts that had absolutely no darkness within them. When brought together, these princesses would reveal the final keyhole and the way to Kingdom Hearts itself. Thus, Maleficent attacks many worlds with the Heartless, and captures all seven.

All the while, they are being used by Xehanort, who had been the first to discover the nature of hearts as well as Kingdom Hearts itself.

At Hollow Bastion, Xehanort's old residence, the seven princesses are finally gathered, but only when Sora sacrifices himself to release Kairi's heart, using a Keyblade constructed from the hearts of the six other maidens. However, this inadvertently opens up the way to Kingdom Hearts itself. With Xehanort having gained possession of Riku's body, forcing Riku's heart to wander to Kingdom Hearts, he disappears behind the darkness that poured out from the keyhole, on the way to Kingdom Hearts.

After Sora is restored from his Heartless self, he once again goes to Hollow Bastion, and seals the Keyhole, holding off the great darkness. Regardless, Xehanort remains a threat, so Sora and co. ventures to the End of the World, a place created out of the remains of the worlds taken by the Heartless. There, the Heartless thrive, and beyond it, in the eternal abyss, lies the door that would lead to darkness, as well as Kingdom Hearts.

After a long battle, Xehanort, wounded, reaches the endless abyss, where the Door to Darkness lies. Xehanort forces it to open, hoping for Kingdom Hearts to fill him with the power of darkness. However, to his horror, Kingdom Hearts is revealed not to be darkness, but light. The light overwhelms him, destroying him. But even with his defeat, the darkness that surrounds Kingdom Hearts threatens to overwhelm the realm of light. Because of this, Sora is forced to close the Door to Darkness, trapping Riku and King Mickey on the other side, in order to stop the Heartless threat. Nonetheless, the sealing also restores the many worlds, along with the barriers between them, while preventing billions of Heartless from overwhelming the realm of light.

Kingdom Hearts II

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Kingdom Hearts, floating above The World That Never Was

Kingdom Hearts is again the goal of Xehanort in Kingdom Hearts II, but this time, it is his Nobody, Xemnas, and the Organization he leads. Maleficent, revived, also seeks out Kingdom Hearts once more.

However, Organization XIII wants Kingdom Hearts for an entirely different reason: they want to use its power in order to become whole, for they lead an incomplete existence as Nobodies. To fulfill their goal, Xemnas uses Sora (since Roxas, their original catalyst for releasing hearts, was no longer an independent entity), having him destroy Heartless. The hearts that are released by Sora's Keyblade (and presumably all other Keyblades) would then wander to Kingdom Hearts, which floats over the Nobody world, The World That Never Was, as a heart-shaped moon, assimilating into it. When it is finished, the Organization would be able to become full humans once more.

This plan is nearly realized until Ansem the Wise attempts to seal Kingdom Hearts away with a digital encoder. However, the machine is unable to process something as powerful and unpredictable as Kingdom Hearts, and it explodes, killing Ansem. Still, this explosion leaves a giant hole in Kingdom Hearts, causing countless hearts to rain down over the world, becoming Heartless as soon as they touch the darkness. With Kingdom Hearts damaged, Xemnas needs to start all over again, though the threat of Sora forces him to take drastic action.

In order to gain the power to defeat Sora, Xemnas enters Kingdom Hearts, taking its power. Thankfully, a new door, much like the Door to Darkness, appears, allowing Sora and his companions to enter Kingdom Hearts as well. But Xemnas had already taken Kingdom Hearts' power, and attempts to use it against his opponents. Though he tries his best, and nearly succeeds, the combined efforts of Sora and his friends bring about his downfall. What ultimately happens to Kingdom Hearts after Xemnas' defeat is unknown.