Kairi is my Other. She's very good friends with Sora, and she's also a Princess of Heart. That basically means that there is absolutely no darkness in her heart-- it's purely light. Normally when people lose their hearts, it returns to the darkness, thus creating a Heartless.
But there was no darkness for such a pure heart to go to. Instead, Kairi's heart fled to a safe place: Sora. Her actual body remained in a comatose state. When Sora realized this, he knew that the only way to return Kairi's heart would be to release his own. So with a Keyblade designed to unlock hearts, he stabbed himself with it.
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Kairi is my Other. She's very good friends with Sora, and she's also a Princess of Heart. That basically means that there is absolutely no darkness in her heart-- it's purely light. Normally when people lose their hearts, it returns to the darkness, thus creating a Heartless.
But there was no darkness for such a pure heart to go to. Instead, Kairi's heart fled to a safe place: Sora. Her actual body remained in a comatose state. When Sora realized this, he knew that the only way to return Kairi's heart would be to release his own. So with a Keyblade designed to unlock hearts, he stabbed himself with it.
Both of us were born at that moment.