I don't own Kingdom Hearts or Injustice. They belong to Disney, Square Enix, DC Comics, WB games, and Netherrealm studios. Okay, so, this is the first Kingdom Hearts and Injustice crossover, so fans of both series should have something to enjoy from this crossover. A few things to get out of the way, this takes place after Kingdom Hearts 3 and during the events of Injustice 2. Sora still has all the powers he had in the KH3 plus some of his old ones back like reflect and stop. Also, no visits to the Disney Worlds. Sora stays on Earth to help defeat Brainiac and the Society. If you have any other old powers or skills that Sora had but lost in the second game, be sure to leave a review after or PM me.

So, with that outta the way, here's the prologue. I hope you enjoy.

Prologue: RECONNECT: KINGDOM HEARTS

WORLD: KRYPTON

A loud explosion can be heard echoing around a large city. A great ball of fire appeared crashing through a statue shattering it. As more and more fireballs appeared with people who are seen running away in fear. A young blonde hair girl with blue eyes and fair skin is seen running away as more people ran past her. Her name is Kara Zor-El.

Kara waited till the last person runs by and begins running in the opposite direction. Running towards where they came from. More fireballs came down as one crashed right in front of her. She hides behind some rubble as she looks over the corner.

There where the fireball hit stood some sort of robot. It's eyes glowing brightly as if scanning for any forms of life. Kara hid back not wanting to be spotted by this robot. However, it soon detected her and prepared to apprehend her when the robot is shot by a group of armed men.

More robots appeared and began attacking the soldiers who were no match for the robots as they were easily defeated. Shel tried to run, but tripped over as she sees something blocking out the sun. Looking up she sees a large head like ship floating own with four robotic tentacles coming from it. The robots spotted her as she tried running from them.

Going through a sewage pipe she managed to get away from the robots. Kara arrived on the other side near a large observatory. She runs to the facility just as she sees the ship hover over her city. Suddenly a bright light engulfed the city and soon it was all gone.

The ship soon took off leaving ruins of wreckage that occurred outside of the city. She stood there in shock at what she had just witnessed, unaware the robots found her and approached her. When she realized this it was too late, she turned to see it preparing to attack her. That was until a woman shot off the robot's head and soon another as well.

"Mother!" Kara beamed at the sight of her mother. Alura Zor-El continued firing at the robots, while protecting her daughter from them, as she told her, "Kara! Come quickly!"

Once she got in she closed the door preventing the robots from coming in. "Stay with me Kara," said the mother as she leads her daughter down the hallway.

"Mother, the ship it just…Argo city is gone. Millions of people," Kara couldn't finish her sentence with what she just saw what happened to her people.

"That's only the beginning," said the mother as she explains the situation. "Brainiac disabled the planet's core. Krypton won't hold together much longer."

"But all your research. Isn't there something you can do?" Kara asked as her mother unlocked the door to her lab. Alura revealed to her daughter what she and her husband were doing, "That's why we're here." The door revealed as small ship, Kara asked confused that this was her mother's solution, "A spaceship? That's what you've been working on?"

"Your Uncle Jor-El discovered a planet that can sustain Kryptonians. Far away from Brainiac," Alura began typing in the coordinates, "He's built a ship just like this for your cousin, Kal." Kara however noticed something was wrong. "But Kal…he's just a baby."

"Which is why you'll need to protect him," She explained her daughter her mission now, "Teach him our ways."

"Me teach him? What about you?" Kara asked until she realized what her mother is doing, "No…no! I won't leave you! Please! Please don't make me!"

Kara's mother tried to remain strong so her daughter can be strong too, "I can't come with you. But you'll never be alone. You belong to the House of El, Kara. A house of hope. Never forget that..." She brought her daughter in for one last hug, "Never give up hope."

Loud thuds can be heard coming from the door as the robots were trying to break in, she told her daughter, "Get in!" Kara's mother puts her daughter in the ship and knew they had little time.

The ship soon began charging up its rocket as it was prepared to take off. Kara turns to her mother as she sees the robots come up behind her and kill her. She tries to get out to help, but it was too late, "NO!" The rocket takes off and flies her out of the facility towards space.

Kara began to cry for the loss of her mother and how she couldn't save her. She stopped when she sees her cousin's ship flying beside her. Inside she could see her cousin sleeping soundly in his ship. She knew she had to protect him and do what her mother wanted her to do. Just then, the planet Krypton blew up, which began to shake both ships. Kara muttered to herself, "Hold on, Kara. Hold on..."

Just then, two large chunks of the planet strike her ship dead-on and she spins, going a different direction from Kal-El's ship, away from Earth. Kara eyes widened in horror, "Kal! No! No, please! KAL!" However, there was nothing she could do as sent off course. Meanwhile, one of Krypton's moons, a man in a black cloak, witnessed these events as he held his No Name Keyblade with a mysterious black box beside him. As the eye, of the Keyblade witnessed the events, the man whispered to himself, "May your hearts be your guiding key..."

WORLD: THE KEYBLADE GRAVEYARD

Many years later, in another timeline, the Guardians of Lights stop the Seekers of Darkness. Master Xehanort and the Organization had finally been defeated for good. Sora, the champion of light, stood on the battlefield full of lifeless keys with his friends and allies, Riku, King Mickey Mouse, Donald Duck, Captain Goofy, Ventus, Terra, Aqua, Roxas, Axel, and Xion. The King of Disney of Disney Castle sighed in relief, "It's finally over."

Mostly everyone smiled and nodded in agreement. However, Sora closed his eyes and frowned, "No..." Despite their victory, despite saving all people Xehanort has harmed in the past, despite closing Kingdom Hearts once again, it came at a great cost. Kairi, Princess of Heart, Sora and Riku's best childhood friend, and the girl Sora loves, was kidnapped and struck down by Xehanort. Riku frowned, but recalled what Xion had told Sora earlier, Kairi was still alive. Lost, but alive. Riku told him, "We'll find Kairi. Let's head back to Master Yen Sid. We'll figure it out."

"No, I know what I have to do." Sora replied. Mickey's eyes widened as he was pretty sure he knew what Sora was planning to do, "Sora..."

He turned to his friends, and gave them a small smile as he explained, "My whole journey began the day I lost her." He placed a hand over his heart, "And every time I find her... she slips away again. I thought we'd finally be together... but she's out there, alone. Not for one more second."

"We'll go too." Donald stated as Goofy nodded, "That's right."

Sora smiled at them, "Thank you, Donald, Goofy. But this time, I have to go it alone."

"Sora, listen. The power of waking isn't to go chase hearts around! Even if you do manage to locate Kairi, you might never come back home to us again!" Mickey warned the teenager. Sora smiled with determination, "I will. And we'll both be back before you know it."

"Please..." Mickey begged. Riku knew that once Sora had made a decision, especially one involving Kairi, there was no stopping him. He walked over and knelt to the King, "Let him go, Mickey."

"Riku..." Mickey turned to him in shock and sadness. Riku told him, "His heart and his mind are made up. Now, believe in him." Mickey frowned knowing Riku was right, "Yeah..." He then gave Sora a small smile, "Safe journey, Sora."

"Thank you." Sora nodded before turning away. He then summoned his Kingdom Key Keyblade and aimed the blade towards the sky, magic swirled around the Keyblade and fired a beam of light toward the sky. This activated the power of waking and his search for Kairi had begun once more...

WORLD: DISNEY CASTLE

Later that evening, everyone returned to the worlds they called home. Mickey, Donald, and Goofy left the Gummi Hanger to see an awaiting Queen Minnie and Daisy waiting for them. The King beamed and ran to his wife. Minnie whipped away a tear and was about to join her husband when Pluto, their dog, beat her to it, tacking his master to the ground. Mickey laughed as his dog licking him, Pluto let up when Minnie joined them. The King sat back up as Minnie giggled. They then smiled happily as they took each others hand.

Daisy marched her way up to Donald, who began to look afraid, until she smiled and hugged her boyfriend. Donald sighed in relief as he hugged back. Jiminy Cricket climbed on to Goofy's shoulder and the two smiled. Everyone then turned to see Master Yen Sid join them with Chip and Dale at his side. Yen Sid smiled with pride at his old pupil when they noticed fireworks going off as the Kingdom of Disney Castle celebrated the King's return and the Guardians' victory. Everyone turned around as they enjoyed the fireworks...

WORLD: THE LAND OF DEPARTURE

The next day, Ventus, Terra, and Aqua had a long overdue funeral for Master Eraqus. Over ten years ago, he was struck down on this very world by Master Xehanort. Aqua had placed the Master's Defender Keyblade, in the ground, and decorated with a reef flowers. Hold their wayfinders closer to their hearts, they gave a moment of silence for the deceased Master. They then placed their wayfinders on their Master's Keyblade and returned to their old home.

However, Ven noticed something hiding in the corner. Chirithy unsure what to do, tired to remain out of sight. Ventus notices the spying Chirithy and calls to it with open arms. The Chirithy bounds over happily and leaps into his arms, cuddling him before Ven began to introduced his old friend to Aqua and Terra...

WORLD: TWILIGHT TOWN

Meanwhile, Roxas and Axel, now in his new clothes that Master Yen Sid gave him before the second Keyblade War, sat on the bell tower enjoying the sunset like they used to do. Xion, also in her new outfit, joined them. The three smiled as they were finally together, yet there was something still missing. Just then Isa, the former Organization known as Saïx, joined them and offered them all sea-salt ice cream. Everyone smiled as they each took one and Isa joined the group. A minute, Hayner, Pence and Olette joined them, with their own ice cream. The four smiled and greeted Roxas's friends.

As the seven of them enjoyed their ice cream as they watched the sunset a dark shadow, flew above them. While Hayner, Pence, and Olette were curious at what they saw, the others knew what it was easily...

WORLD: RADIANT GARDEN

Later, Ansem the Wise, Ienzo, and Even finished their latest project to revive Naminé Having been brought back to life using Dark Riku's replica vessel, she wakes up in the lab in Radiant Garden's castle. The three scientist smiled at this...

When she was able to walk, Dilan and Aeleus escorted her out of the castle where the Gummi Ship was waiting for her. Riku exited the ship, where he smiled at the sight of Naminé and offered her his hand to take her to their other friends. Naminé smiled and took it as they entered the Gummi Ship. With that, the ship flew away from the world, and headed back to the home world where Sora, Riku, and Kairi grew up...

WORLD: DESTINY ISLANDS

With everyone gather, they spent their day playing on the beach. Riku, Roxas, and Terra raced each other as Mickey and Aqua cheered them on. Ven, Axel, and Isa played catch with one of Lea's old frisbees.

Naminé and Xion collected sea-shells near the water. Hayner, Penace, and Olette made a sand sculpture of Mickey, however, they were shocked by Donald's spiten image sand sculpture of himself. Donald showed it off to Goofy as he made the exact pose as his sculpture of himself. Goofy tired to warn Donald but it was too late when the frisbee knocked over the sculpture burying him in the sand.

Donald then lost his temper as he shook the sand pile off him. He then began yelling at the boy responsible, as Ven tired to apologize. Donald then noticed two familiar faces and tired to run over to him but was stopped by King Mickey, who wanted to give them some time alone. Everyone turned to see Sora and Kairi sitting on the Papu tree watching the sunset, as they held each other's hands. Sora had successfully brought Kairi back. They held their each other tightly as they turn to each other and smiled. Tears slide down the Princess of Hearts check as she knew what was to come next. Much to everyone's horror, they watched helplessly as Sora faded-away.

Before he vanished completely, he made Kairi a promise, "I'll come back to you, I promise." With that, Sora has vanished completely. Kairi sniffed as she replied, "I love you."

She then finally broke down crying as she sat there alone. Everyone on the beach, where speechless. Donald wondered, "What happened?"

"I was afraid this would happen..." Mickey frowned. Aqua frowned, "He... took Kairi's place... he sacrificed himself for her."

"So... Sora's gone?" Goofy asked with sadness in his eyes. Mickey teared up as the others began to follow, that is until Roxas spoke up, "No... he's not..."

Everyone turned to Roxas, he explained, "I don't know why but I can feel it... he's lost... not gone..." Axel grinned, "Well, you are... or were Sora's Nobody... so if you think he's still out there then he must be."

"So, I guess it's up to us to help bring Sora back..." Riku stated. Kairi then walked up to the group, she wiped her tears, "Then what are we waiting for..." she gave them a sad smile, "Let's get that lazy bum back!"

Everyone nodded in response, Terra added, "She's right. Sora has saved us all... we owe him a debt that can never be repaid."

"So... where do we start looking?" Xion wondered. Ven thought, "How about Master Yen Sid? He might have an idea where to look."

"Who's he?" Hayner wondered. Goofy explained, "He was the King's old teacher." Pence eyes widened, "He sounds powerful!"

"Then it's settled. Let's go to the Mysterious Tower!" Mickey beamed. Everyone nodded as they all headed to where they'd park the Gummi Ship. Aqua gave on last look where Sora sat, and whispered, "May your heart be your guiding key."

She then followed the others, it was time to save Sora from his sad ending...

WORLD: ? ? ?

Sora groaned as he opened his eyes, as he to open his eyes. There was a man kneeling before him, he stated, "He's walking up..." Sora started picking himself up as the man helped him up, "Easy there, kid. You've been out for awhile..."

He heard someone behind him grab him a chair as Sora sat down, "Thanks..." The Keyblade's chosen then finally got a good look at the man, Sora could tell that this man has been through a lot, "You okay, kid... You just appeared outta nowhere..."

Sora then recalled what had happened, he had found Kairi and brought her home to the Destiny Islands, but he had to take her place. However, he never thought he'd appear on a new world. He turned to the man, "Who are you? Where am I?"

"My name's Barry Allen and you're at the Luthor/Wayne Climate Research Station." The man explained as his fellow coworkers watch from a distance...

WORLD: EARTH

RECONNECT: KINGDOM HEARTS

And that will conclude the prologue. Pretty interesting so far, huh? I know for you KH fans some of you were had mixed feelings with the ending. Well, I still enjoyed the game and it's story despite it's flaws. I still think it was a AWESOME game. But I hope you like were things go from here. Next time, Sora explores this new world while getting some background from what happened in the past, he ends up in Gotham City were he meets Green Arrow and Black Canary as they battle a super villain that was DLC in the second game. Can Sora help them defeat this villain and how will the Queen family react to Sora's appearance. And will Bruce Wayne think he could be a possible alley... or foe. Stay tuned...

I hope you enjoyed the prologue. Be sure to leave a review with comments and recommendations for the story. Be sure to hit those follow and fav. buttons as well. See you next time!