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During a desperate attempt to gain the upper hand in a XANA attack, Sissi is unwittingly made immune to the Returns in Time. Now a Lyoko Warrior, Sissi finds her entire life changed forever.
AKA: A Sissi Lyoko Warrior AU beginning in episode 41, Ultimatum
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While things happen around, a large supercomputer was discovered by one Jeremy Belpolis where he not only finds a girl named Aelita, he also finds a large threat named X.A.N.A. who desires to destroy all by using the lust of mankind. Together with Aelita, and friends, they try their best to rebel against his attempts, and face the kind of sick sexual advances he had in mind for them both in the real world, and the virtual world. All the while, they try to handle their own kind of hormones as well around each other.
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There’s No Anti-Virus for Cruel Humans by JustMakeLeftTurns
Fandoms: Code Lyoko, Code Lyoko Evolution
06 Oct 2025
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Yumi's just lost everything. She can do nothing but watch Tyron confirm that his supercomputer has been shut down. The Cortex is gone. Her friends are gone.
Her friends are dead.
(A missing scene from episode 26, between when Tyron shuts down his supercomputer and when Yumi arrives at the factory and realizes her friends are alive.)
Series
- Part 3 of Whumptober 2025
- Language:
- English
- Words:
- 2,016
- Chapters:
- 1/1
- Kudos:
- 2
- Hits:
- 29
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Broken Code, Broken Barriers by Penumbral_Writer
Fandoms: Code Lyoko, Cyberpunk 2077 (Video Game), Batman Beyond, Transformers: Prime, Danny Phantom, Destiny (Video Games)
06 Oct 2025
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After a first contact had been made, more people begin working on the 'Transversal Communications Project'.
It's unfortunate that once the barriers are breached, it could cause a ripple effect.So how is it that three tech geeks, a new netrunner and an AI(?) meet?
With a lot of confusion.
AKA: A Technological Ripple
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Warning this story contains self injuries and domestic violence and abuse.
What if Aelita's new begin on Earth with missing memorys causes a bigger problems than in the show. With a slightly traumatized Yumi. Which makes her a bit more mature than in the show.
The second fandom Undertale. Will be mainly just background filler.
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Waarschuwing dit verhaal heeft zelf verwondingen en huishoudelijk geweld en verwaarlozing erin.
Wat als Aelita nieuwe begin op aarde met een missend geheugen grotere probleem veroorzaken dan in de show. Met een licht getraumatiseerde Yumi. Die hierdoor wat volwassener is dan in de show.
De tweede fandom Undertale is toegevoegd. Maar is vooral als wat achtergrond opvulling.
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Ulrich didn't have siblings, and he suspected he probably never would. But who said siblings had to be related by blood?
(The one shot collection about the characters that needed to interact more: Ulrich and Aelita)
Chapters 1-6 written between June 2017 to December 2019.
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Sapphic September 2025 Day 29 Prompt: Chiffon
On the third anniversary of Aelita's return to earth after years spent on Lyoko, she and Yumi spend the night together in celebration. The fight's finally over, now to live.
Series
- Part 29 of Headlong into fall (Sapphic September)
- Language:
- English
- Words:
- 1,370
- Chapters:
- 1/1
- Collections:
- 1
- Hits:
- 13
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When Odd gets a mysterious text message on his phone from a secret admirer asking to meet him in the woods, it doesn't go as expected and he runs into something else instead.
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Prompts added: New Outfit, Rain, Crimes, y=mx+b, Birthday
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Two years after Jeremy and the others shut down the supercomputer, XANA returns and captures them all except Aelita. At the same time the Total Drama cast arrive in France after being roped into another season. Now Aelita must save her friends with help.
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NO SOY DUEÑA DE CODE LYOKO
Todo comenzó cuando morí... Al abrir los ojos me di cuenta de que renaci.... bueno vamos a volvernos locos
- Language:
- Español
- Words:
- 516
- Chapters:
- 1/?
- Hits:
- 10
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(High) School's out for the summer, and with six weeks of freedom before eleventh and twelfth grade, the desire for escape and adventure leads the Lyoko warriors into new chapters of their teenage lives, fragmented apart on vacation as the summer sun drifts over the world they hope they can still save, day after day.
Aelita experiences a peaceful (and not digital) Meditteranean Sea with Odd; Ulrich daydreams of the wallflower he's glad he picked; Yumi regains sanity and clarity in her Honshu homeland, and Jeremie tinkers with emulation, and its resultant implications regarding their existential fight that also seems to pause for the summer break. (He's still not sure why that is.)
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“Why do I have to pretend to be his girlfriend?” Yumi complained to Milly. “I don’t want to be all lovey-dovey with a stranger. What if he’s just an obnoxious celebrity? Or what if everyone thinks I’m fucking him for his money or something?”
“Oh, um…” Milly paused and looked around nervously. They had stopped outside the conference room and a masculine-sounding voice cleared his throat inside. A brunette, athletic man sat on the other side of the long table. His arms were crossed over his chest and his expression did not read amused.
“I assure you no one will think you’re dating me just for money. I’ve actually been told it’s my incredible good looks that pull women in first.”AU - Ulrich Stern is a soccer star for the French national team who has faced multiple threats to his life before the European Championship. With a push from his coach, they hire a female bodyguard to pretend to be his girlfriend: Yumi Ishiyama.
Will include Jeremie, Aelita, Odd, and bunch of others! I'll add more tags, characters, and pairings as they come up!
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In which the return to the past in False Start has yet to reset Jim's memory, and the Lyoko Warriors make good on a promise.
Jim remembers and kinda becomes a Lyoko Warrior AU.
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Sapphic September 2025 Day 20 Prompt: Lighthouse
Yumi's lucky when she stumbles across a lone lighthouse keeper after getting lost in the wilderness. The strain of loneliness her savior is under becomes clearer the longer she stays with her.
Series
- Part 20 of Headlong into fall (Sapphic September)
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Everything was supposed to be over. Franz Hopper told five kids that if they followed his instructions, they could live normally again. What they don't know, is that X.A.N.A has evolved to the point of evading death. The Lyoko Warriors only delayed his progress, until one of them managed to seal him inside the Digital Sea. Aelita's father didn't tell them the whole story, and now the world has to face the unforgiving truth. William Dunbar must acknowledge the weight of his sacrifice.
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Turnabout X.A.N.A by boyargastya
Fandoms: 逆転裁判 | Gyakuten Saiban | Ace Attorney, Code Lyoko
17 Sep 2025
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Athena Cykes returns to Paris as a defense attorney to defend an old school friend, but as with many cases with the WAA lawyers, it's not all open and shut...
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This is a WIP of an AU I made back in 2022. The previous versions have been scrapped or lost as they weren't on my main email. (The latest previous version I have is accessible on my profile.)
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Lots of us know the story of Code: Lyoko, of brave warriors facing down a threat to mankind as they know it, all to save the humanity of a certain pink-haired not-so-Artificial Intelligence. But what if there were more to the story? Follow the lives of Jeremy Belpois and company from their fortuitous beginnings all the way through to their heroic victory over the evil program XANA, and all the road blocks in between.
The story draws heavily from canon, with additions and small changes to make it more palatable for a slightly older audience. Told from the points of view of all the Lyoko Warriors. Hope you enjoy!