A conflict in which many Keyblade wielders fought prior to the events of Kingdom Hearts Birth by Sleep. It was light and darkness that clashed with each other creating the X-blade. It WAS Master Xehanort who was interested in the events of the Keyblade War.
Looking for answers due to a disturbance in the realm, Terra follows Master Xehanort to see if he was the answer for the recent threats against his world and other worlds. Ven, fooled by Vanitas (mysterious boy) follows Terra because he was afraid that the connection he, Terra and Aqua share might be broken if Terra left. Aqua (Keyblade Master) was keeping a close eye on Terra to make sure he wasn’t involved with darkness while making sure that Ventus was safe from any harm that could possibly be in his way.
As Terra gave into the darkness, Master Xehanort took over Terra’s body. Ventus lost his heart after defeating his darkness and destroying the X-Blade. Aqua became lost in The Realm Of Darkness.
Sora awakens as the Keyblade Hero. Sora appears to be chosen as the keyblade’s wielder. A boy who grew up on Destiny Islands was separated from his close friends “Riku” and “Kairi”.
While seperated, Sora met up with Donald and Goofy. Teaming up, they set off on an adventure to find Riku, Kairi and King Mickey.
Coming into contact with Kairi, Sora thrusts his Keyblade into his heart, unlocking the seven hearts and temporarily becoming a heartless. Once Sora’s heart briefly left, Roxas was created. Roxas then became No. 13 of Organization XIII.
Sora, Donald, and Goofy defeated Ansem and were reunited with Rku and King Mickey. In order to close the Door to Darkness, Riku and King Mickey stayed in the Realm of Darkness while Sora closed the door causing the worlds consumed by the heartless to return to normal.
Sora, Donald and Goofy set off on another journey to find Riku and King Mickey. At the same time Riku and King Mickey stumbled upon Castle Oblivion along with Sora, Goofy and Donald. Not aware that they were all in the same location, their journey continued.
Upon their arrival in Castle Oblivion, Sora, Goofy, Donald and Riku fought various Organization XIII members that lurked in their path. As they continued to defeat members from the Organization and advance through the thirteen floors and basement of Castle Oblivion, Sora’s memories began to dissapear because of a “witch” named Namine (Kairi’s nobody) had full control of his memories and those around him.
Once reaching the final floor of Castle Oblivion, Sora, Donald and Goofy fell asleep in “pods” in order to have their lost memories restored. Riku and King Mickey left Castle Oblivion to set off on a new journey in order to fight the darkness inside of him.
During the events of Chain of Memories, Roxas had become friends with Axel and Xion (eighth and fourtenth member of the Organization). Xion however was a puppet created from Sora’s memories of Kairi and began to absorb Roxas’ power, which leaked memories causing Sora’s restoreation to grind to a halt. After finding out that the Organization was using him for their benefits, Roxas decided to leave the Organization. The Organization used Xion as a means to absorb Roxas completely and create a complete copy of Sora for their own use. Roxas defeated Xion. He was later defeated by Riku and captured by Diz where he was placed in a digital version of Twilight Town to finish Sora’s restoration.
Roxas awakens and finds his seven days limited. Coming to terms that he is Sora’s nobody, he had no choice but to give up and accept his fate in order for Sora to regain his memories.
Sora, Donald and Goofy awakened from their sleep and set off on a new journey once more. King Mickey, Donald, Goofy and Sora re-united. The king informed the three that they didn’t defeat the real “Ansem”. King Mickey explained that the real Ansem is Xemnas and the Ansem they defeated was a “fake” (Xehanort’s heartless).
Sora, Donald, and Goofy re-united with Riku, Kairi and King Mickey. Together, they fought for one last final battle with Xemnas. Once defeated, Sora, Riku and Kairi returned to Destiny Islands one more time before receiving a mysterious letter from the King.
King Mickey, Donald and Goofy performed an analysis on the strange occurrence in Jiminy’s Journal. A message was left “Thank Namine”. A digital “Sora” was created to resolve and debug the problems that resided in Jiminy’s Journal, along with figuring out the message left by Namine. The message “Their hurting will be mended when you return to end it” was discovered.
After reading the letter from the King, Sora, Riku and Kairi learned that there are memories from the past that remain in sleep within Sora and even themselves.