Sora (Kingdom Hearts)/Synopsis

The story of Sora from the Kingdom Hearts series.
==Birth By Sleep==
Prior to the main events of Birth By Sleep, Sora's newly born heart encounters the injured heart of Ventus and mends it, offering to help him restore his broken heart until Ventus can recover on his own. This allows them to form a connection with one another, and as a side effect of their connection causes Ventus dark half Vanitas's face to resemble a teenage Sora.
As Sora grew up, he found a best friend and rival in Riku a boy who was one year older than him and they would often compete in sword fighting with wooden swords, racing, and many other competitive activities. 
When he is four years old, he separately encounters 2 Keyblade wielders, Terra and Aqua. When Terra appeared on the islands, he only saw Sora from afar and failed to sense any potential in him, though did see it in Riku, which led to Terra to pass on the ability to wield the Keyblade to Riku, who he hoped to one day take on as an apprentice after Riku's keyblade came to him. Aqua appeared on the island sometime later and sensed the potential in Sora to become a Keyblade Wielder and was tempted to take him as an apprentice, but chose not to after sensing Terra had given the ability to Riku and did not want them to be put through the ordeals she and Terra had. She also made Sora promise that he wouldn't give up on Riku if he ever went off the path to darkness.
Later on, as he and Riku sat on a beach, Sora began to feel sad for no apparent reason which Riku suggested was that someone in pain was reaching out to him and urged Sora to reach back. Sora succeeds and is presented with Ventus's lost heart who requests to rest within Sora's heart which Sora, wanting to help, accepts. This action causes Sora to receive the ability to wield the keyblade later on in the series due to carrying the heart of a keyblade wielder within his own.
==Between Birth By Sleep and Kingdom Hearts==
Around a year later, a young girl named Kairi appears on their island following a meteor shower, and not long after, Sora and Riku discover a small hidden cave on their island and go explore it in search of what they believe is a howling monster, but it just turns out to be the wind. Inside, they find nothing but an oddly handle-less wooden door which they can't open, so they leave with Sora deciding they should go see the "new girl".
Sora and Riku befriend Kairi, and the three quickly become inseparable as they play together on the islands. Sora gradually develops a crush on her, which Riku also seems to develop, and their competition shifts towards who can better impress Kairi. During the next several years, they often wonder about what lies beyond their small world, prompted by the mystery of Kairi's forgotten home.
==Kingdom Hearts==
At the age of 14, Sora begins working on a raft with Riku and Kairi to use in the hopes of discovering other worlds. Sora takes a nap on the beach and has a bizarre and vivid dream in which Riku is pulled in by a wave while reaching out to him, he sees himself falling through the sky in a meteor shower to the bottom of the ocean where he can breath, and then being guided by a mysterious voice to fight dark creatures before finally a gigantic foe that nearly drowns him in darkness. Upon waking up, he more actively assists in collecting supplies for their voyage and later receives a paopu fruit from Riku that supposedly when split between two people causes their destinies to be intertwined and jokes that Sora should share it with Kairi. Sora later enters the secret place to find a drawing of himself and Kairi that the two had made as children and draws himself giving a paopu fruit to Kairi before being startled by a mysterious cloaked man who talks of the world being consumed by darkness and taunts Sora about his lack of knowledge of the outside worlds before vanishing the moment Sora turns his attention away from him and to the mysterious door at the back of the cave.
The night before the voyage, a large storm hits the island and Sora sneaks out to check on the raft and learns that Riku and Kairi are also on the island, while his mom is unaware of his departure as she calls him down for dinner. He finds Riku first, but Riku has given into the darkness in order to travel to other worlds and attempts to take Sora with him. At this moment, the Keyblade Riku was promised arrives, but due to Riku's decision to accept the darkness, the Keyblade chooses Sora to be its bearer instead and saved him from being pulled into the darkness. Sora finds Kairi within the secret place seemingly ill before the door rips open and sends them both flying out, Kairi seemingly vanishing on contact with Sora, who is left to fight the giant monster from his dreams before he is pulled into the sky into a massive orb.
He wakes up in the world known as Traverse Town where he finds more Heartless while exploring before meeting Leon who either knocks him unconscious or makes him pass out from exhaustion in a boss fight. Upon waking up, Leon and his partner Yuffie explain the nature of the Keyblade, the Heartless, and Ansem to him. When they are attacked by Heartless, Sora is forced to part with Leon and Yuffie. He makes his way to the town's Third District where he meets Donald Duck and Goofy, and the three of them take down a swarm of Heartless and a large armored Heartless serving as their commander, the Guard Armor. After introductions, Donald and Goofy ask Sora to come with them to other worlds, as per King Mickey's request, and Sora agrees, hoping to find Riku and Kairi and not realizing that Donald has no interest in helping them find his friends and only wants his help to find the King.
They travel to only two worlds before problems emerge among the three, as the third world they encounter doesn't meet Donald's standards on where the King could be, though Sora wants to investigate, and their argument causes the ship to crash. They are separated, and even when reunited, the two refuse to apologize to each other, though they manage to make amends. It's also discovered that people have been going missing on worlds as Alice went missing from her homeworld of Wonderland and was implied to have been kidnapped to another world. Upon a return trip to Traverse Town, they come across Riku by chance, who to the group's surprise, has no trouble wielding Sora's Keyblade, though leaves when the group bickers on letting Riku join them. Leon also informs Sora of the existence of Keyholes, holes through which the heart of worlds can be accessed by the Heartless and consumed to destroy the worlds themselves.
They continue to travel the words, helping those they find in trouble and making numerous friends along the way, as well as develop a true friendship amongst themselves while they seal the Keyholes. Once they reach Neverland, it's revealed that Riku has allied with Maleficent and has received new powers of darkness, which he uses to make a copy of Sora, and has them imprisoned while he escapes with the comatose body of Kairi to Hollow Bastion.
Sora follows but due to the power Riku has gained, his heart has also grown strong enough to take the Keyblade from Sora, revealing to the stunned Sora that Riku was the true chosen one of the Keyblade. As per their orders to follow the key, Donald and Goofy abandon Sora to follow Riku while Sora joins up with Beast to go after them.
They catch up with them at the castle where they are separated and Sora is left trapped with Riku, who attacks Sora, though he is saved by Goofy, who along with Donald, choose to forsake the King's orders in order to protect Sora. This causes Sora to realize his true power wasn't the Keyblade, but the friends and connections he made along his journey, which causes his light to eclipse Riku's darkness, and the Keyblade abandons Riku and truly accepts Sora as its wielder. Riku fights them with his Soul Eater, but is defeated and runs off in shame.
They then storm the castle, confronting Maleficent along the way and besting her before coming across the missing people from the worlds along with Kairi, and is informed by Riku, now possessed by Ansem, that they are all the Princesses of Heart necessary to open the Door to Darkness, but can't do so until Kairi reclaims her heart from Sora, who had unknowingly been entrusted with it back at the islands. Sora fights and defeats Riku and uses his artificial Keyblade to unlock his heart and restore Kairi, though he turns into a Heartless in the process. Thankfully, he is restored by Kairi before they flee to Traverse Town where Sora receives a good luck charm made by Kairi with the promise that he'll give it back to her. 
The trio returns to Hollow Bastion but find Ansem gone, though all the princesses are now free, who inform him that Ansem vanished into the Final Keyhole, which the three also enter in order to lock the Keyhole. Upon coming out, they encounter Leon, Yuffie and Aerith, who reveal Hollow Bastion was their homeworld and Ansem its beloved leader until he unleashed the Heartless. The three then leave for a world created from the remnants of worlds destroyed by the Heartless, and at its center, discover the destroyed remains of the islands before fighting Ansem and then being pulled into a massive void just outside the Door to Kingdom Hearts where they have one last battle with Ansem in his World of Chaos form. In desperation, the weakened Ansem tries to open Kingdom Hearts to gain the ultimate power of darkness, but he's informed that he's wrong as deep down, there is a light that will never go out, and thus the true nature of Kingdom Hearts is light, which proves true as light bursts out and destroys Ansem.
They attempt to close the door before the Heartless can come through from the Realm of Darkness and receive help from the other side by a freed Riku, as well as King Mickey, who holds back the Heartless. As the door closes, Riku asks Sora to take care of Kairi, and Sora and Mickey use their Keyblades to seal the Door to Darkness, leaving Riku and Mickey on the other side. As the worlds begin to be restored, Sora finds Kairi and promises to return to her before they are separated once again as the walls between the worlds are restored. Sora, Donald, and Goofy end up on a path in a grassy field, thinking about how to find Riku and Mickey, when Pluto appears with a letter from Mickey, and they follow him into the distance with renewed hope.
==Chain of Memories==
Picking up where Kingdom Hearts left off, Sora along with Donald and Goofy, chase Pluto through the grassy field and do so for an entire day until night falls and they stop to rest for the night. Sora awakens later to find a crossroads along with a hooded man who informs him "Along the road ahead lies something you need. However, in order to claim it, you must lose something that is dear to you" before disappearing as the paths merge to one that Sora, followed by Donald and Goofy, follows to Castle Oblivion. Upon entering, they learn that they had all had a feeling that their missing friends are inside the castle somewhere, and the stranger reappears to introduce them to the castle's strange mechanics that has removed every spell and every ability that had learned until then, because the way of things in Castle Oblivion is "to find is to lose, and to lose is to find".
He then proceeds to sample Sora's memories and create a card that upon being used at the 1st floor door, sends Sora walking into, shockingly, Traverse Town, which the man reveals was created from Sora's memories of said world and the man reveals that to fight within the castle, Sora must make use of cards to not only attack, but to also call on his friend's aid, as for the most part, he will be alone in his fight through the castle.
Continuing on to explore the town, they go to the third district and run into Leon, who has no idea who any of them are, as according to him, they had never met, though strangely, he somehow knows their names. Yuffie shows up and suggests they go talk to Aerith to try and figure things out, though unfortunately, she doesn't know what to make of the situation as they feel like they know each other, though they know they had never met Sora. Sora reminds Leon of the farewell speech he gave them before they left to fight Ansem and Leon recalls the end of the speech and Aerith guesses that Sora's heart is helping them remember. After looking around the town they run into Cid who is in the same predicament as the others before the group is attacking the armor wearing heartless of their original visit to Traverse town. Upon its defeat, Leon and the others arrive to see them off and Aerith seemingly stays behind to inform him that if Traverse Town is an illusion then they are too and he shouldn't let himself fall for the illusions and be distracted from what important before Donald and Goofy reveal he is talking to thin air and Aerith had actually left with the others. 
At the floor exit, they are confronted not only by the hooded man, but also by Axel, who after a fight, gives Sora more cards created from his memories, though not before telling him that in the castle, he must trust what he remembers and seek what he forgets, and then he will find someone special. Sora takes this to mean Riku and the King but Axel gives no straight answer and leaves. 
Sora and company continue on up to explore the castle, traveling through memories of other worlds they had seen in their last journey, but now fail to recognize them, any of the people they encounter, the name of the castle that Sora turned himself into a Heartless at, or even that it happened in a castle, as a result of Castle Oblivion having already started to affect their memories, with it even wiping Jiminy's Journal for good measure.
As he goes up the castle, Sora is confident that he won't forget anything important such as Kairi or the promise he had made her, stating that as long as he has her good luck charm with him, he can never forget her. However, as he says this, he briefly recalls another girl, but can't place her face. At the end of the Seventh floor of the castle, Sora is confronted by another hood wearing person, Larxene, who attacks him, gets him to remember the girl's name as Naminé, and reveals he has been carrying around a good luck charm she had given him and hadn't known it.
As he continues ascending the tower, Sora, to his surprise, runs into Riku, though Riku isn't as thrilled about their reunion as Sora, is angry at him and reveals Naminé is in the castle and implies that in the past, Sora had done something to make Naminé leave the islands, so she doesn't want to see him. Riku states he will care for Naminé and Sora should return to the islands to look after Kairi as per Riku's wish when they closed the door, and takes off farther up the castle. Sora follows in order to save Naminé, but it becomes apparent that his memories are becoming greatly altered as he can't remember the faces or names of his other friends on the island, and now believes it had always been him, Riku, Kairi, and Naminé on the island before Kairi is finally completely phased out of his memories and replaced with Naminé.
They eventually reach a world Sora is sure he's never ever been too, though it feels oddly familiar to him somehow. Here they encounter another member of the antagonists, Vexen, who attempts to eliminate Sora to foil the others' plans, but is defeated and attempts to warn Sora not to follow his memories before he is eliminated by Axel when he begins to tell him about the other side of his heart. Upon exiting this floor, he encounters Riku again and both realize that they both have the same exact memories of time spent with Naminé along with identical good luck charms given to them by Naminé. Riku goes into denial of the situation, calls Sora's a fake and attacks him, though flees.
At this point, Sora loses his temper at his companions when they warn him to be careful and he chooses to move on to the next world without them, which turns out to be the memory of his island where he encounters his friends, who he still can't remember the names of, as well as Riku, though Sora is disappointed to realize it's just his memory of Riku and not the real deal. He becomes confused when all make mention of him apparently often daydreaming about a "certain girl" but can't figure out who they mean as he can't recall anyone. After relieving the destruction of the islands, Sora finally encounters Naminé, though to his confusion, he is approached by a see through Naminé, who tells him to ignore the other Naminé and try to remember the one he truly cares for, which causes Sora to think of Naminé at first before his good luck charm transforms back into the charm given to him by Kairi, confusing him as he sees her replace the fake Naminé.
Naminé tries to remind him of Kairi and begins to confess her actions, though Riku interrupts and attacks him to get him away from Naminé before suddenly collapsing due to Naminé destroying the memories in his heart, and it's revealed that this Riku is actually a fake and is a replica of Riku made by Vexen who Naminé was forced to manipulate like she had with Sora in order for Marluxia to use Sora to take over the organization. Larxene returns for Naminé, but Sora chooses to protect her despite her recent revelations and defeats Larxene with hello from Donald and Goofy. After this, Naminé comes clean and apologizes for what she's done to all their memories, though Sora forgives her easily as while his memories are in doubt, his feelings aren't and they set off to the next floor to defeat Marluxia, who they eventually find battling Axel while using Naminé as a shield, which forces Sora to fight Axel and seemingly defeat him.
After finding Marluxia, the villain orders Naminé to destroy their memories, though Naminé refuses and is saved by the Riku Replica, leaving Sora free to challenge and defeat Marluxia and lock the door to the chamber they fought in, locking all of Marluxia's darkness within. Unfortunately, Naminé can't restore their memories as easily as she undid them, and so she presents them with memory pods that will restore their true memories, though at the cost of forgetting about Castle Oblivion and everything that happened within, Naminé included. Sora promises that he won't forget her as the memory will still be there somewhere inside him and he'll find it again. In the pod, Sora is told that for the process to begin, he must remember his "light", which will bring back the memories that were lost. Using her good luck charm, Sora concentrates and manages to remember her.
==Kingdom Hearts 358/2 Days==
Sora doesn't appear in this as he is asleep during his year of sleep, but is heavily referenced. Naminé has difficulties in restoring his memories due to the existence of his nobody Roxas, and a further complication in the form of a replica of Roxas and his leaking memories named Xion, who are instead gaining Sora's memories in the form of dreams, gradually slowing Sora's restoration process to a complete stop. 
The Organization intends to have Xion absorb Roxas in order to become a complete form of Sora to act in their interests, leave Sora unable to ever awaken and erase Roxas from existence. Xion discovers the truth of her existence and desires to help Sora awaken despite meaning it would end her existence and leaves the Organization, but is retrieved by Axel, who is unaware of the complete truth, and Xion is experimented on to gain new powers to use to absorb Roxas.
His Nobody also defects, and Xion is sent to absorb him and catches up to him in Twilight Town where Xion reveals she now physically resembles a 14 year old Sora and fights him with all her strength, but is defeated as per her plan to defy the Organization. She asks that Roxas stop the Organization and returns to Sora, sending his memories back where they belong, but his restoration is still hindered due to Roxas still needing to be reunited with Sora to restore him at 100%.
Riku hunts him down before he can go on a suicide mission against the Organization, over powers him and brings him back to DiZ where they begin the final stages of restoring Sora, putting Roxas in an artificial simulation for the time being. Sora appears as a playable character in the Mission Mode gameplay mode after unlocking him first and wields the Dream Sword, Kingdom Key, and Ultima Weapon Keyblade.
==Kingdom Hearts II==
As his memories are slowly returned to him over the following days, Roxas once again experiences them as dreams in the simulation of Twilight Town, but doesn't suspect the truth until it's revealed to him by Naminé, with him also briefly put into contact with Sora's heart after a near death experience in the simulation that had put him in contact with Kairi's heart. After DiZ manipulations are finally revealed to Roxas along with his memories, he chooses to return to Sora, causing Sora to finally awaken in the real Twilight Town.
After a year-long sleep, Sora wakes up and finds himself inside a weird mansion in Twilight Town with Donald, Goofy, and Jiminy. Not knowing that he has been asleep for a year and finding himself taller then he used to be, as well as that his clothes no longer properly fit him and the journal containing record of the previous adventure is blank except for the words "Thank Naminé", he sets out to accomplish a goal he set previously; to find Riku and King Mickey.
Exploring the town, he encounters Hayner, Pence, and Olette, the friends whose digital copies had been befriended by Roxas in the simulation. Sora comes across pure white creatures outside the train station, but Sora is still too offset by his awakening to fight properly and tires out, but Mickey wearing a robe comes to their rescue and tells them to take a certain train before running off. Boarding the train, Hayner, Pence, and Olette come to see them off for reasons they can't properly explain, as while they had just met, they also feel they were saying goodbye to an old friend which causes Sora to shed a tear via his connection to Roxas.
The train takes them to Yen Sid's tower where they encounter an old adversary of Mickey, Donald and Goofy's known as Pete trying to break in, but flees after revealing that his boss, Maleficent, had been defeated by them a while ago. Inside, they are informed a year had passed since their previous adventure, and while the Heartless are still around, that they are more of a hindrance than an outright threat to all worlds. The new threat to the worlds are Nobodies, which are created when those with strong hearts are turned into Heartless and their left behind physical forms take on a will of their own, that while able to mimic having a heart, don't possess true feelings, and a mysterious group known as Organization XIII is leading them.
To prepare him for his new journey. the fairies Flora, Fauna, and Merryweather give him more fitting clothes that come with the ability to draw on the power of his friends to unlock new powers.
Tasked with opening doors between the worlds to fight the Organization, he returns to the three the gummy ship and they set out to other worlds, with them first going to Hollow Bastian where they reunite with Leon, Yuffie, Cid, Aerith and Merlin, who are working on restoring their world, and reveal that for most of the year until recently, they had forgotten about them. They also reveal that a Heartless army is gradually building around Maleficent's headquarters after Leon and the others reclaimed the castle at the heart of Hollow Bastion that Maleficent used as her headquarters previously with her fellow Disney Villains. Members of the Organization appear to harass them and confuse Sora by calling him Roxas before leaving.
Sora travels to other worlds looking for Riku and King Mickey and encounter Pete on a number of worlds trying to create more Heartless to reinforce Maleficent's growing army, but they foil him time and again. He also reunites with old friends he previously fought alongside like Aladdin, Jack Skellington, Hercules, Simba, and Mushu. He also goes to Goofy and Donald's world of Disney Castle, where they save the Cornerstone of Light from Maleficent by foiling Pete's attempts at destroying it in the past. Returning to Twilight Town, they find that Kairi had at some point been there after escaping Axel's attempt to kidnap her on Destiny Islands, only for him to successfully kidnap her shortly before Sora returned.
Returning to Radiant Garden, the group finds that a supercomputer belonging to Ansem has been discovered, and when Sora attempts to access it on info regarding the Organization, he, along with Donald and Goofy, are digitized into the system itself and meet and befriend the program known as Tron, who returns them to the real world. They meet with Mickey, who informs them that the one they knew as Ansem was actually one of his apprentices known as Xehanort.
The Heartless army then begins to attack the city, and while Mickey wants Sora to instead return to traveling the worlds, he joins the fighting and defeats the Organization Member Demyx. Fighting alongside, Yuffie, Leon, Cloud and Tifa, the Heartless army is gradually destroyed. A tired Sora is then met by Xemnas, the leader of the Organization, along with Axel, who Sora finds out was the one who kidnapped Kairi and Saïx. They reveal their plan to use hearts liberated from Heartless slain by Sora to create a version of Kingdom Hearts.
Sora tries to resist the Organization's plans, but is saved by Maleficent, who seemingly sacrifices herself to cover their escape into the Realm of Darkness where they find a box containing key belongings of Roxas from the fake Twilight Town, where Sora is able to identify him by name despite never seeing him before.
Once again traveling the worlds, Sora defeats the Organization's attempts to create powerful Nobodies and defeats the member Xaldin before again returning to Hollow Bastion where they find Heartless from Tron's world are running wild. Returning to the virtual world, they work with Tron to stop the plot of Sark and the Master Control Program of destroying Hollow Bastion, shut down the virtual Heartless and rediscover the world's real name as Radiant Garden.
Sora finally finds a way to the world of the Organization, The World That Never Was, by taking a path located within the virtual Twilight Town, and finds Axel waiting for him, who chooses to sacrifice himself to save Sora from Nobodies. This spurs Roxas to awaken within him and fight him in a mental battle where Sora defeats him, Roxas acknowledging him as a good other.
Storming The Castle That Never Was, Sora finds Kairi while being threatened by Xigbar, but surprisingly, Ansem's Seeker of Darkness saves her and leaves Xigbar to be slain by Sora. Afterwards, he learns that this Ansem is actually a transformed Riku who was forced to accept Ansem's form in order to gain his strength. 
Working with them, they travel up through the castle and defeat the remaining members of the Organization besides Xemnas, and Sora finally learns that Roxas was his Nobody, who Riku now believes wanted to meet Sora, with Sora admitting he wanted to meet him too. They encounter the king and DiZ, revealed to be the true Ansem the Wise, working to undo the Fake Kingdom Hearts via a device that overloads and seems to kill Ansem, but not before he apologizes to Roxas through Sora for his mistreatment of him. A side effect of the explosion also destroys the Heartless within Riku, restoring Sora's friend to his true form.
Confronting Xemnas at the top of the castle, they refuse to work for him to steal hearts and seemingly defeat him. As Naminé opens a portal to their homeworld through Kairi, Sora finally meets Roxas, who properly merges with Sora. Before Sora and Riku can go through the portal, it is destroyed by Xemnas, who absorbs the power of the fake Kingdom Hearts for one final battle that destroys him, but leaves Riku injured and both trapped in the Realm of Darkness. By chance, Sora finds a letter in a bottle written to him earlier by Kairi, which causes the Door to Light to appear, through which they return to their island and reunite with their friends.
Later on after Donald, Goofy, and Mickey had returned to their world, Riku shares his belief that the Door to Light was actually made by Sora's heart before Kairi appears with another letter, this one from the King, and he begins to read.
==Kingdom Hearts: Dream Drop Distance==
Sora and his best friend Riku have been summoned by Yen Sid for not only their Keyblade master exam, but also for a new mission; to strike down Master Xehanort, who has been revived thanks to the defeat of Ansem the Seeker of Darkness and Xemnas. Part of this mission and Mark of Mastery, Sora and Riku need to enter the sleeping worlds (which are worlds that have been disconnected thanks to the heartless) to find the Seven. sleeping keyholes.
However, as it turns out, in Sora`s story, Xemnas, Xigbar and Saix have been revived thanks to the time traveling youth incarnation of Xehanort, and Xemnas reveals that the true purpose of Organization XIII was not to give the Nobodies true hearts, but to "Nort" them and turn them into other incarnations and vessels of Xehanort. After another fight with Xemnas, Sora passes out into a dark sleep, which gives Xehanort the chance to turn Sora into the 13th seeker of darkness, but that did not happen as Sora is saved by both his best friend Riku and Lea, the original counterpart of Axel.
Back in Yen Sid's Tower, Sora awakens first and proceeds to have a small party with Donald and Goofy before Riku awakens following diving to the depths of Sora's heart to save him from the darkness put there by Xehanort. Yen Sid then gives them the results of the exam, and while Riku passes due to having used the power of awakening to save Sora, Sora himself failed due to falling to the darkness via the manipulations of the Real Organization 13 as well as losing the power of awakening, though Sora isn't phased by the news and congratulates Riku for passing. Lea promises to aid them in the destined battle with the Real Organization 13 and reveals his own recently discovered Keyblade. Sora chooses to return to the Realm of Sleep in order to thank all the Dream Eaters he and Riku had fought alongside and give proper farewells, with his happiness unknowingly being shared with a sleeping Ventus.
==Kingdom Hearts III==
Sora returns in Kingdom Hearts III, in which he is instructed by Yen Sid to visit Hercules in Olympus to undergo training to restore his lost powers. Following this, Sora, joined by Donald and Goofy, make their way to new worlds as they attempt to track down the other Guardians of Light to fight Master Xehanort and his thirteen pieces of darkness in his True Organization XIII, while learning of the Princesses of Heart having transferred their duties to the new Seven Lights, finding three in Rapunzel, Anna, and Elsa, while Kairi maintains her status.
Along the way, Sora finds Master Eraqus' Keyblade that Aqua originally possessed back on the Destiny Islands, and uses it to find his way to the Dark Margin, arriving just in time to help Riku rescue King Mickey from a Demon Tower, before facing off with Aqua, corrupted by darkness from Ansem, Seeker of Darkness, as Anti-Aqua. Despite all her training and skill as a Keyblade Master, armed with Mickey's Keyblade that she confiscated after Mickey dropped it when the Demon Tower subdued him, and spurting disparaging remarks regarding her suffering in the Realm of Darkness for over a decade, Anti-Aqua is bested by Sora, freeing Aqua from the darkness that corrupted her, and Sora takes her back to the Realm of Light and returns Eraqus' Keyblade to her.
Together, Aqua and Sora travel to Castle Oblivion and Aqua restores it as the Land of Departure before going to wake up Ventus, only to be stopped by Vanitus as he wants to reunite with his "brother". Just as Vanitus is about to kill Aqua, Sora uses his power of waking to restore Ven's heart to him, allowing him to awaken and save Aqua, forcing Vanitus into retreat. With Ven and Aqua bringing their total Guardians of Light to seven with King Mickey, Riku, Sora, Kairi, and Lea/Axel, everyone heads to the Keyblade Graveyard to face Master Xehanort.
However, he is already waiting for them, and after they fight through a veritable army of Heartless, Unversed, and Nobodies, they soon are confronted by Terra-Xehanort, who takes down Ven and Lea before Donald, enraged, blasts him away with a powerful Zettaflare, which causes Donald to collapse in exhaustion afterwards. Seizing the moment, a massive Demon Tide hurricane appears to face off with Sora and the others. When Aqua freezes in horror of the Demon Tide, having seen the Shadows in it as Anti-Aqua, causing her to fear becoming her dark self again, the Demon Tide sweeps up everyone but Sora and Riku, with Sora futilely reaching out for Kairi before she is pulled away from him and swept up into the Demon Tide. Horrified and devastated at the loss of Kairi and everyone else, Sora screams in anguish and collapses to his knees in defeat, believing Master Xehanort has won. Refusing to go down without a fight, Riku makes a heroic last stand to protect Sora before the Demon Tide overwhelms him and goes for Sora, thus ensuring the prophecy of the Keyblade War foretold in the Book of Prophecies by the Master of Masters comes to pass as darkness wins as light is extinguished.
However, despite her apparent demise by the Demon Tide, Kairi was able to use her power as a Princess of Heart to protect herself and Sora, sending him to the Final World, where after meeting Chirithy, the Nameless Star, and Naminé, who ended up there herself after she and Kairi were taken by the Demon Tide, Sora begins the process of recovering his body. Once fully restored, he travels to Olympus, the Caribbean, Monstropolis, Arendelle, Corona, San Fransokyo, and the Toy Box to recover the hearts of Riku, Ven, Aqua, King Mickey, Donald, Goofy, and Axel before the Grim Reaper of the Heartless, the Lich, can confine the hearts to oblivion, killing them permanently. After he defeats the Lich and rescues the hearts, Young Xehanort appears to warn Sora of the massive damage he's doing misusing his power of waking to save everyone and a heavy price will be paid for disrupting the Master of Masters' prophecy that had been foretold in the Book of Prophecies.
Despite Young Xehanort's warning, Sora soon reunites with Kairi, and the two of them return to the Keyblade Graveyard, finding that everyone else has been fully restored after Sora recovered their hearts, allowing their bodies to be revived, and resetting time to before the encounter with Terra-Xehanort. As a result, when confronted by Terra-Xehanort again, he is stopped from repeating history by the Lingering Will, Terra's Keyblade Armor containing his willpower, who forces Terra-Xehanort off the scene, leaving everyone else unharmed when the Demon Tide reappears to carry out its assignment to eliminate all of them. However, Sora is supported by the Keyblades of fallen Keyblade warriors from all over the Graveyard, and with their combined power, destroys the core of the Demon Tide, obliterating it for good.
With the Demon Tide and Terra-Xehanort having been stopped, Master Xehanort summons the Skein of Severance labyrinth to challenge the Seven Guardians of Light against his thirteen pieces of darkness. As Sora helps his fellow Keyblade warriors while Master Yen Sid, Donald, and Goofy hold off the massive reinforcements of Heartless, Nobodies, and Unversed, Sora soon is aiding Aqua and Ven against Terra-Xehanort and Vanitus. When Vanitus is defeated, Sora is able to catch a glimpse of the dark version of his face that Vanitus sports before he fades back into darkness, but Terra-Xehanort captures Sora, Aqua, and Ven in chains and prepares to kill Terra's fellow Wayfinder bearers. In that moment, the Guardian intervenes on Sora's behalf and saves Aqua and Ven. When Terra-Xehanort demands to know why his Guardian would rebel and help the Keyblade wielders, the Guardian grabs him by the face to shut him up, before ripping the straps over its mouth off to speak, revealing itself to be Terra's Heartless, who has every intention now of taking back his body from Master Xehanort, to a terrified Terra-Xehanort's fear. Helping Terra out, Sora paralyzes Terra-Xehanort, before Terra releases his heart from the Guardian, causing it to vanish, and returns to his body, expunging Master Xehanort's influence and heart from it for good. With Terra restored in mind, heart, and body, Sora leaves him to reunite with Aqua and Ven while he goes to help the others.
Arriving where Kairi and Axel are fighting Saix and the hooded member of the True Organization XIII, when Xemnas appears to punish Axel for his previous treason against his Organization, the hooded member steps in to have the honor, but when they point their Keyblade at Axel, Sora calmly intervenes as he steps between them, causing the hooded member to retaliate against him in a blind fury. At that point, speaking through Sora, Roxas calls out to the hooded figure, revealing it to be Xion, and Xion's heart takes over the Replica body her past self loyal to Xemnas was using, expunging the past heart from it. Annoyed by this interruption, Xemnas shoves Sora and Xion away, causing Xion's hood to fall, revealing her face, black hair, and blue eyes, and Axel soon remembers her as well. As Xemnas moves to finish Xion off, Axel pathetically tries to help Xion, but it is only when Roxas arrives in a new body of his own provided by Ansem the Wise, Even, and Ienzo with the Replica Program, that Xion is saved. Unimpressed, Xemnas kidnaps Kairi before anyone can intervene, leaving Sora, Roxas, and Xion to fight Saix and defeat him, leading to his revival as Isa. Sora then heads to deal with Master Xehanort, while Roxas, Xion, and Axel share a heartfelt, happy reunion.
Meeting up with Riku and King Mickey, Sora discovers that he still needs to fight past Ansem, Seeker of Darkness, Xemnas, and Young Xehanort before reaching Master Xehanort. Once they are defeated, Master Xehanort pulls out his trump card, an unconscious Kairi that had been brought to him following her being taken by Xemnas. Telling Sora he needs motivation to re-forge the χ-blade, Master Xehanort then mercilessly cuts down Kairi in cold blood, causing her body to glow brightly before shattering into pieces, apparently killing her.
Enraged by her murder, Sora attacks Master Xehanort in a blind, heartbroken fury, but is easily repulsed, as is Riku and King Mickey when Master Xehanort uses Stopza against them. With the χ-blade reformed, Master Xehanort summons Kingdom Hearts to begin his endgame to reboot the universe and purge it of darkness. By the time the other Guardians of Light arrive in Terra, Ven, Aqua, Axel, Xion, and Roxas, it appears they are too late to stop Master Xehanort. However, realizing they can use Master Xehanort's control over time against him, the Guardians of Light blast Master Xehanort, and send him into Kingdom Hearts, where he faces off with Sora, Donald, and Goofy in his former home of Scala ad Caelum. Before doing so, Sora is assured by Xion that Kairi is still alive, and Master Xehanort did not truly kill her as Xion can still sense her heart, so she will be alright.
Facing off with Master Xehanort, Sora faces stiff and fierce resistance from him, but manages to overcome everything that Master Xehanort uses against him. It all culminates in when Master Xehanort uses the χ-blade against Sora, but just when it appears that he is able to overpower Sora with it and slay him, Donald and Goofy come to Sora's aid, resuscitate him, and unleash their Trinity Limit against Master Xehanort, finally overpowering and defeating the elderly Keyblade Master, stopping his plans once and for all.
Even after being defeated, and extremely injured, Master Xehanort still struggles to carry out his endgame, but the spirit of Master Eraqus, who resided in Terra after his own death by Master Xehanort, finally convinces his old friend to give up, declaring "Checkmate" to their chess game they played when they were younger. Coming to his senses and realizing the folly of his efforts, Master Xehanort finally admits defeat, and entrusts the χ-blade to Sora before he and Eraqus pass on into Kingdom Hearts and the afterlife. With their departure into the afterlife, Sora then uses the χ-blade, supported by his fellow Guardians of Light, to seal Kingdom Hearts for good, ending the Second Keyblade War and saving the universe, before being returned to the Keyblade Graveyard.
However, there was still one last thing for Sora to do, and that was to track down Kairi and bring her home. Although King Mickey pleads with Sora that it was too dangerous as his heart and body would not handle misusing the power of waking again to rescue Kairi, Riku convinces King Mickey that it was for the best and to trust Sora in his decision. With all his fellow Keyblade warriors, along with Donald and Goofy, wishing him good luck, Sora departs to bring Kairi home.
After helping Kairi recover all the pieces of her fragmented heart and body, and helping her defeat an illusionary Master Xehanort that held the last pieces, Sora rescues her and takes her home to the Destiny Islands, where they celebrate with the rest of their friends in Riku, King Mickey, Donald, Goofy, Lea, Isa, Hayner, Pence, Olette, Terra, Aqua, Ventus, Xion, Namine, and Roxas. They soon all watch as Sora and Kairi have one last moment together, with Kairi crying upon learning of Sora's fate, before he fades away as punishment for misusing the power of waking and violating the Master of Masters' prophecy in the Book of Prophecies regarding the Keyblade War. 
A year passes and his allies are scouring the Realms of Light and Darkness in search of him with Kairi voluntarily putting herself into a deep sleep as part of an experiment by Ansem the Wise to try to contact Sora's heart. In Radiant Garden, Riku analyzes digital copies of Sora and the Organization's members programmed into Cid Highwind's computer, hoping to uncover clues to Sora's whereabouts through their battles though the results are inconclusive. However, Cinderella's Fairy Godmother appears and tells Riku to meet Yen Sid, who suspects that they may be able to find Sora through the dreams of Riku, Kairi, and a nameless girl Sora encountered in the Final World.
Sora awakens to find himself in a nighttime version of the Final World and a voice calls out to him with him being surprised to find the voice belongs to what appears to be Yozora, a character of a game he had seen during his journey to find the Lights to confront Master Xehanort. "Yozora" admits to also knowing who Sora is but states he is not Yozora and confuses Sora before challenging him while claiming he had been told to save Sora as the Final World briefly becomes Sora's Dive to the hart before putting them atop a building in an unknown city. After the battle Sora and the figure are separated with "Yozora" stating he will save him.
==Kingdom Hearts: Melody of Memory==
In her sleep, as Kairi search for clues to Sora's whereabouts by looking over her memories of him and their friends, she finds herself in the Final World and is attacked by a memory of Master Xehanort. As she is overpowered, Sora's heart protects her and briefly replaces her with Sora who fights the memory of Xehanort, though his voice cannot reach them. After Xehanort is defeated, Sora's heart leaves Kairi's. Upon his defeat, Xehanort leaves her with a vague clue on where Sora has gone before vanishing. Upon waking up it is determined that Sora had gone to the "other side" spoken of by Xehanort and is now in a world of fiction parallel to light and dark. Fairy Godmother believes she knows where to start and takes her and Riku to the Final World where they encounter the "Nameless Star" briefly met by Sora who Fairy Godmother believes is the final key to Sora's whereabouts. Upon Riku mentioning dreams of him and Sora in a city with tall buildings, she believes it to be the world of Quadratum. Wanting to help Sora, she allows Riku to use the power of Waking on her to make a Portal which he uses to go to Quadratum in Search of Sora while Kairi returns to the Real World to continue training under Aqua. 
==Kingdom Hearts IV==
Category:Synopsis