Ill make it short. Namine is Kairi's nobody. Since part of Kairi's heart was in Sora, she had the power to control his memories. The strange Organization captured Namine to use her power to erase Sora's memory and make the Keyblade master their puppet. Marluxia's plan was to overthrow the Organization. In the end, their plan failed and the traitors were killed by a fourteen year old holding an overgrown key. Yes, a big key. Afterwards Namine is preparing to restore his memory. But unfortunately, he won't remember her when he wakes up.
