Chapter Text
Kingdom Hearts x Attack on Titan Crossover
This is close to my other Attack on Titan x Kingdom Hearts crossover, "Can Someone Like Me Have Light in Their Hearts?" What would have happened if the Heartless start attacking the people in Attack on Titan?
And what if Eren and his friends got scattered when their world is submerged into darkness?
Set in Kingdom Hearts II and Post Season 3 in Attack on Titan right when Rod Reisse Turns into a Titan and Eren gains the Hardening Serum.
What to expect in Kingdom Hearts II
Prologue
- Story begins with Eren begging Historia to turn into a titan and eat him when she refuses and says that she's the worst girl in the world.
- Filled with hatred, Rod let his heart be consumed by darkness as he licks the titan serum. During the chaos, their world fell into Darkness.
- Ends with Eren being sucked into a dark void and Roxas' voice saying "Looks like my summer vacation is... Over."
Chapter 1 Waking up to a New & Free World.
- After Sora, Donald, Goofy, and Jiminy Cricket wake up and left the mansion, they found Eren laying on the ground passed out at the gate.
- Of course, Eren would get on the defensive and demands his questions be answered.
- When everything is settled down, Eren takes a look at his new surroundings and was in awe at it and felt his heart both filled with light and joy but also sadness and despair. Of being in a world with no Titans, but all alone without his friends.
- After meeting Hayner, Pence, and Olette the group went to the train station only to get ambushed by a couple of white humanoid creatures.
- Eren questions the new and unknown technologies around him, he tries not to talk his questions out loud, but it's hard not to when you've spent most of your life in isolation from the outside world with no further advanced technologies being invented for so long.
- On the train ride Eren tells his story about his world up to the present.
The Mysterious Tower
- Eren threatens Pete to step aside or die where he stands. Scaring the big cat out of his wits.
- In the Tower, Yen Sid tells what he knows about Eren's world and how the Titans came to be. (The whole truth.) And Eren takes it hard, thankfully Yen Sid offered some advice on how to change the hearts of hatred and how he can help lift the curse of Ymir.
- Despite being alone, Yen Sid told Eren that his friends are not forever gone but are scattered to other worlds. By Joining Sora on his Journey he will be able to find them.
- The three fairies gave Eren enchantment garments too.
Hallow Bastion
- Erwin Smith and Hange is in this world. And she's going crazy.
- While Eren is out with Sora, Donald, and Goofy, Erwin and Hange learn more about modern technologies.
- Eren's missing friends will be gathered at Merlin's house or known as Hollow Bastion Restoration Committee HQ.
- Hange with the help of Donald's three nephews opens a stall for Eren to refuel his air tanks and blades. With her experiments underway, Eren can upgrade them into a stronger set of swords and longer last gas supply.
Mulan
- Eren points out that Mulan is a girl at their first encounter.
["Wait you can tell?!" said Mulan. Sora and the others were in shock at this sudden information.
"It was pretty easy to tell, for me at least. Not so sure about them," said Eren.
Sora and Donald: "Hey!"
Eren: "As for me, I've been betrayed by three people I considered to be friends, and they polled off their disguises very well. And I know a girl who had to pretend to be a different person for her life to be spared."
Mulan's thoughts: 'She's just like me.']
- Levi is in this world.
- Most of this goes with the movie plot than the Kingdom Hearts II plot.
Beauty and the Beast
- Eren doesn't shift into his titan form. (Don't want to destroy the Beast's castle.)
- The castle servants tell Eren, and Sora the whole story of how Prince Adam became the beast he is now.
- Eren and the Beast share a connection of how they feel much like a monster.
- Eren doesn't care much about love, but when he sees how Bell deeply cares for Beast and how he too went out of his way to rescue her from danger. Eren thinks back to the time when he and Historia talk about themselves, mostly how Eren admits that he likes the real Historia instead of her fake self, and how Historia saved him from his weak and suffering moment before their world got swallowed in darkness. He admires her strength.
Olympus Coliseum
- Eren starts to hear the voices of the previous users of the Attack Titan and the Founder Titan in the underworld.
- Eren was way ahead of Sora and the others due to his ODM gear, he manage to find hades talking to an older man (Auron) about fighting Hercules to the death. And the man's response was a badass talk back in Eren's book. "This is my story. And you're not part of it." his second comeback was even great. "Huh, no wonder no one wants to die."
- Phil can see that Eren has the skills to be a fighter and a hero. He only needs a push in the right direction.
- Sora gets a little confused with Eren and Auron with how close their names are similar to pronouncing them.
- Not to mention Eren and Auron teaming up in battle creating a combo move and a small teasing on Sora, Donald, and Goofy.
Aladdin
- Sasha is in this world and is sneaking some food from the stalls.
- Inside the Cave of Wonders, Eren is in awe of all the mountains of gold and pieces of jewelry. Making it hard not to take some of it for himself and others.
- Genie's comedic ways bring a smile to Eren's face, and for a moment he completely forgets about his anger toward the traitors from his world.
Disney Castle & Timeless River
- Connie is in this World. (In the Past.)
- Armis is with Maleficent and Pete, of course, she's been keeping him in the dark about her true intentions. By using the power of darkness Armin is believed that this is the best course of action to save their world and free the people from their titan forms.
"To Surpass Monsters, You Have To Discard Your Humanity." --Armin.
- In Timeless River. Eren's appearance shows what he looks like when he was a kid when the colossal titan broke down the outer wall.
- In Timeless River. Eren sees a ghostly image of Ymir Fritz from time to time. Not only her but his father when he was a young boy as well, and his sister who Eren never heard of before.
100 Acre Woods
- Eren understands the pain of losing memories. But having someone to forget about you is more painful than the other way around.
- Eren talks to Kanga about his mother, and she responds to him with the caring love a mother would give to her kids. As a way to soothe his grief over the loss of his mother.
- Being inside a storybook helped Eren regain bits of pieces of his lost childhood and the good times that came from it.
Tron
- After understanding how a computer works, it turns out that Eren has skills in using them.
- Eren has more fun on the Light Cycles than he had when riding on a horse.
- Eren's name is part of the new DTD password.
Destiny Islands
- Historia ends up on Destiny Island and becomes friends with Kairi.
- The two then left the Island through a dark corridor when the Nobodies had them surrounded. Courtesy of Axle.
The Nightmare Before Christmas
- Eren's Halloween form/costume is a werewolf.
- Eren's Christmas form/costume is a toy soldier (or for me the Nutcracker Prince).
- Despite learning what holidays are, made Eren was very upset at remembering how their old rulers banned everything related to the outside world.
- Santa gives Eren a gift on their first visit, it wasn't big or small, but it was perfect. A photo album of his family, friends, and moments in life with quotes or advice his mother or father had said to him at that moment in time.
Pirates of the Caribbean: Curse of the Black Pearl (Goes with the Movie Plot)
- Mikasa is in this world.
- Mr. Gibbs calls Mikasa a "Bloody Sea Witch" after seeing her taking down some pirates twice her size.
- Eren enjoys seeing the sights of seeing the ocean for the first time. Let alone sailing on it.
- Eren and Sora pick up on a few tricks from Captain Jack Sparrow.
- Eren manages to stop Sora from drinking Rum, while Mikasa sadly falls victim to rum and admits her romantic feelings towards Eren, but she mistook Donald for Eren.
The Lion King
- Eren's animal form is a Taita falcon.
- Jean is in this world and his animal form is a Zebra. The reason why is simple. Horse face.
- Goes with the plot of the movie. Including Timone and Pumba's bait/hula dancing scene. (With Jean providing the drumming.)
The Little Mermaid
- Eren's merman form has dark green scales, with the fins on a lighter dark green.
- Eren was reluctant to dance and sing, but he's pretty good at singing his heart out.
- I was thinking of Eren fighting Ursula in his titan form when she makes herself huge. Monster Fight.😁
- Eren invites his friends and team to join in on the festival. (In the second visit.)
Twilight Town
- Kairi and Historia escaped from Axel only to be kidnapped by the Org. XIII.
- Historia tells Kairi, Hayner, Pence, and Olette about her dearest friend/lover, Ymir, and how she left her. They were strongly upset about Ymir's choice, but when she starts talking about Eren... The four starts to point out bits and pieces of Historia's feelings for Eren are starting to grow.
The Battle at Hallow Bastion
- Sora and Eren both fight alongside their friends to reach the leader of Organization XIII, Xemnas, and to take out the Heartless.
- Eren turns into his Titan form and starts killing the heartless. Much like Alice Liddle from Alice: Madness Returns.
- Reiner, Berthold, Zeke, and Pieck are with the Org. XIII. Manipulating the four to do their bidding. (Annie is still sealed in her crystal tomb.)
The Second Visits to the Worlds
- Levi and the others get to travel with Eren and Sora this time.
- Eren's been having some strange dreams recently. (Both from the future and past visions and the Station of Awakening.)
- Hange laughs at Levi for having his birthday on the same day as Christmas Day.
- Seeing Jack and Sally waltzing in the town square with snowflakes gently falling, has left Eren daydreaming of him and Historia dancing in Jack and Sally's place.
- Eren ask Genie if he can help with his Titan form, but he says he can't due to a curse on it. But he does know a good hand full on how to break curses.
The World Ends With You
- Eren gains the power to weld a Keyblade. (After his heart is filled with light.) Not one, but TWO Keyblades.
- Namine helps Kairi and Historia escape from their jail cell the story follows along with the game plot.
- When Ansem's machine exploded, Eren shields Historia from the blast which triggers the two to see into the future of their world from the Original Timeline.
- At the final boss battle. It's Eren, Sora, and Riku vs. Xemnas.
The Ending
- Eren was with Riku and Sora in the Realm of Darkness.
- "I promise I'd come back to you." said Eren, "You did." Historia replies as the two held each other in a loving embrace hug. Standing in the ocean waters with the sunset behind them.
Epilogue
- Even though they have saved Kingdom Hearts, Eren and his friends' world is still missing.
- Erwin, Hange, and Levi were arguing with Mickey and Yen Sid about taking Eren back into custody, while Mickey and Yen Sid stand their ground on the dangers of their rash decision.
- Eren snapped and made his choice to start his training as a Keyblade welder and to find a way to save his world and his friends from their own self-destruction.
Side Notes for this story
- In this story's series. Eren will gain knowledge and character growth with all the characters from different worlds he interacts with.
- There are more titan-heartless battles in each world. Including in Atlantica.
- I forgot to mention that some of the titans from Eren's world are taken into the Orgininaztion in experimentation to use as weapons, and some of them are also taken by Maleficent turning them into heartless. And Rod Riess is one of them used in the final climax of the story. One of the final boss battles.
- I2I. I was listing to this song while writing this, and I can see it as a song for a celebration party.