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Summary
Following the assassination of Prince Alvar, the kingdom of Eternalia teeters on the edge of chaos. The royal family blames the rebel Black Swan, but whispers in the shadows suggest darker forces at play.
Now, Prince Fitzroy Vacker, the official heir, must endure a royal Matchmaking to secure the throne. But as noblewomen from across the kingdom compete for his hand, others are fighting to learn the truth of Eternalia.
Sophie is a simple girl from the poorer city of Havenfield, traveling with her cousin to find out more about her mysterious biological parents who gave her up. She accidentally joins the Matchmaking, only to uncover secrets about herself and the kingdom she lives in. Through obstacles like the annoying Prince’s guard, Keefe Sencen, who’s convinced she’s a rebel spy, and with the help of her cousin, Dex, she discovers a truth: magic is real. And she has it too.
Think of this as a YA Magic AU for kotlc
Enjoy :) -
In My Mind by KruxWindrime
Fandoms: Keeper of the Lost Cities Series - Shannon Messenger
22 Jan 2026
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Summary
This work is basically what happened that resulted in my other work Wishing Letters.
EnjoySeries
- Part 2 of Wishes of the Mind
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Perfect childhoods by KruxWindrime
Fandoms: Keeper of the Lost Cities Series - Shannon Messenger
22 Jan 2026
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Summary
Everyone always tells the Vacker kids how easy their lives were because of their last names. Everyone calls them perfect, or stuck-up, or Golden. That's not how they remember it.
Biana remembers wanting her brothers to spend time with her.
Alvar remembers wanting to spend time with friends.
Fitz remembers wanting to meet the expectations.
Alden and Della remember being perfect parents.
But the kids don't remember perfect childhoods -
Harness Your Hopes on Just One Person. by Flyer_Guardian
Fandoms: Keeper of the Lost Cities Series - Shannon Messenger
22 Jan 2026
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Summary
Bronte didn't realize he needed family in his life until Oralie started messaging him and inadvertently became his honorary daughter.
Oralie didn't realize she needed a father figure until the grumpy history and cognitive thinking mentor started worming his way into her heart.
Elwin and Livvy have been friends for a long time, bonding between their shared love for their students, the medical field, and a weird sense of humor.
But can Oralie open up to Bronte about the recent death in her life that is slowly breaking her? Can Elwin trust Livvy with the truth about his childhood?
[This is a Human Collage AU that is purely just texting]
Series
- Part 3 of The Mentors Lounge.
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My KOTLC Universe 1 by CelestialStar12
Fandoms: Keeper of the Lost Cities Series - Shannon Messenger
21 Jan 2026
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Summary
Follows the events of KOTLC Everblaze (Book 3). Solana Heart, Celeste Heart and Dusk Endal are OC's.
"I walked through the crowd and stood outside the door. The sign above read ‘Slurps and Burps: Your Merry Apothecary’"
Series
- Part 1 of My KOTLC Universe
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Keefe's Guide on How to Get Girls to Stop Bothering You! by kurbee
Fandoms: Keeper of the Lost Cities Series - Shannon Messenger
21 Jan 2026
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Summary
When Fitz becomes off-limits, his fangirls are now all over Keefe and some are even bothering Tam. Of course, Tam doesn't like this, and Keefe finds that more attention from the ladies is actually very overwhelming.
So, what does Keefe propose to stop these girls from flirting with him and Tam?
Of course, it's for them to start dating each other.
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Sealark by Chatnoob2TheScreamingParrot
Fandoms: Keeper of the Lost Cities Series - Shannon Messenger, Percy Jackson and the Olympians - Rick Riordan, Percy Jackson and the Olympians & Related Fandoms - All Media Types
20 Jan 2026
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Summary
Sophie Foster is back in the Lost Cities—but the Lost Cities have changed. The threat of war hangs heavy over her glittering world.
A mysterious symbol could be the key—if only she knew how to translate it. And each new clue reveals how far the dark schemes spread. The Black Swan aren't the only ones who have plans.
Now, the Neverseen and Black Swan have turned their gazes on a new player in this game.
The Sealark, the predecessor of the Moonlark. A living weapon who could spell disaster for the lost cities if left in the Neverseen's hands.
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Percy Jackson isn't really sure what to do after the wars, and the death of his Mortal family. So, when a bunch of strange people pop up at his door, claiming the be elves, what's left to loose?
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Or: Percy Jackson is the Sealark, the predecessor of the Moonlark, and is now being brought to the lost cities to stop the Neverseen from taking him Prisoner. This is a Re-write of Lodestar, and may or may not be a series.
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Unfortunately discontinued. Please read last ch if you're nin the KOTLC fandom.
Series
- Part 1 of Percy of the Lost Cities
- Part 1 of The Sealark Series
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Favorite Colors by KruxWindrime
Fandoms: Keeper of the Lost Cities Series - Shannon Messenger
20 Jan 2026
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Summary
Fitz sat down next to Keefe without saying a word, but Keefe could feel the emotions radiating off of him.
Anger. Confusion. Sadness.
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Fitz got into an argument with his parents about... colors?
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KOTLC: A dirty sleepover by RandomUserHere7
Fandoms: keeperofthelostcities - Fandom, KOTLC, sex - Fandom, rape - Fandom, hypnotized - Fandom, sophiefoster, dexdizznee, smut - Fandom, Incest - Fandom, tiana - Fandom, bianavacker, potions - Fandom, animal-transform, animalcat, Catgirl - Fandom, Pregnant - Fandom, Zoophilia - Fandom
20 Jan 2026
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Summary
THIS COULD BE A COLLABORATION WITH ANYBODY WHO HAS READ KOTLC AND WANTS TO WRITE SMUT!
Sophie, Keefe, Biana, Tam, Fitz, Marella, Lihn, and more decide to have a slumber party! Some rizz, sex, and LGBTQ+... it turned out that Biana had something else planned, something quite dirty...
(IF ANYBODY WANTS TO HELP OR WANTS TO WRITE WITH ME, PLEASE FEEL FREE! IF YOU MESSAGE ME ON MY PROFILE, I WILL PROMISE TO WRITE YOUR USERNAME AND USE IT AS A CHAPTER!!!)
First time writing smuts after reading some! Hope you like it!!!DISCLAIMER: None of the characters are mine
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what's the source of you? (in your head, in your head) by keeperofmylostsanity
Fandoms: Keeper of the Lost Cities Series - Shannon Messenger
20 Jan 2026
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Summary
When Marella woke up on a bed of flames, she felt her life was over.
When Grady woke up to what felt like hundreds of pinpricks in his stomach, he felt his life was over.Now, they're the only two people who understand each other.
Marella goes to Havenfield in themiddle of the night, seeking Grady's advice.
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such fragile lives by mintlove
Fandoms: Keeper of the Lost Cities Series - Shannon Messenger
20 Jan 2026
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Summary
Fitz goes out with girls often, several attempts to become the man his father expects. The next day, he will recall how the date went, usually badly, as he goes down on Keefe. And sooner or later, he ends things with the girl, comes back to Keefe with the inevitability of sunrise, and Keefe feels sharp, cruel relief.
except!!!! not this time
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Welcome Aboard (Five Nights at Ikea - a Kam story) by fangirlwhofangirls
Fandoms: Keeper of the Lost Cities Series - Shannon Messenger
19 Jan 2026
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Summary
this is absoulute crack i have no idea why i wrote this
yes ikea like the store
i havent been to ikea in like 9 years so i really am just making up crap.
technically there is and isnt major charecter death like they dont actually DIE but they kind of do in the sense of this story?anyway heres the actual summary:
Keefe and Tam had specifically been told to make sure they get out of the Ikea before it closed. because every night, the Employees search the isles, looking for a poor lost soul to find. and if they find you, you become one of them. you get a vest. a uniform.
so as you run around the ikea, make sure they are not behind you. or you might be the next person telling someone "welcome aboard" -
Fugitives of the Lost Cities by Unprofessional_geekery
Fandoms: Keeper of the Lost Cities Series - Shannon Messenger
19 Jan 2026
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Summary
Kevin is a human teenager who spent his adolescence trapped in nightfall, where the neverseen forced him to train to become a super soldier as part of their growing army of humans who can kill without guilt. But when one of Vespera's experiments on Kevin goes awry, giving him the power to control quintessence, he immediately escapes with his friend, Emily. Things go south from there.
Meanwhile, Dex, Biana, Marella, and Jensi find out about a human with mysterious powers who broke out of Atlantis and poses a serious threat to the lost cities. But when they try to tell the others, everyone else is too caught up in a new plan the neverseen has, which smells suspiciously like a trap. But the two problems might not be so different. Typically, things go even further south from there.
Or, the author wanted to write lots of fluff with little plot, but ended up writing lots of plot with little fluff. >:(
(Additional warnings to be added in future chapters) -
lost it to trying (a kotlc idol trainee au) by the_stars_asked_why
Fandoms: Keeper of the Lost Cities Series - Shannon Messenger, K-pop
18 Jan 2026
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Summary
Quintessence Music Group, a global company rising from years of controversy, has gotten its hands on some of the most potential-saturated, coveted young talents in the industry. The question is, will the friendships forged between these trainees--and the trainees themselves--survive LOSTCITY?
- Language:
- English
- Words:
- 328
- Chapters:
- 1/?
- Kudos:
- 1
- Hits:
- 17
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and there would be peace in the garden of eden by antispotlight (lyra_jin8815)
Fandoms: Keeper of the Lost Cities Series - Shannon Messenger
17 Jan 2026
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Summary
Fitz and Biana have been absent from school since the year started, and Sophie hasn't quite been herself. It bothers Dex enough to visit Everglen and see what's really going on, see if maybe there's something, anything he can do to cheer her up. Even if it means putting up with Fitz Wonderboy Vacker — even if it means sticking around after he literally gets punched in the face — even if it means coming to Everglen for hours after school every day to hang out with… Wait, who's he doing this for again?
or:
A canon-divergent Dex POV retelling of Exile from when Fitz and Biana start skipping school because of Alden's mind break. Dex shows up on their doorstep one day to get some answers of his own and ends up in a confusing, delicate, intimate something with Fitz Vacker founded on grief, comfort, and stress.
Forget about everything you know from after like chapter 37. Timeline is a state of mind.
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in these rotten scraps (a heart remains) by We_flew_on_wings_of_fire
Fandoms: Keeper of the Lost Cities Series - Shannon Messenger
17 Jan 2026
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Summary
There is something wrong with the house. No one else has noticed it, but Cassius knows.
- Language:
- English
- Words:
- 502
- Chapters:
- 1/1
- Kudos:
- 5
- Hits:
- 35
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Betrayal Never Comes From Enemies by Daughters_of_Hades
Fandoms: Keeper of the Lost Cities Series - Shannon Messenger
16 Jan 2026
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Summary
The Vacker siblings and their best friends before Sophie. When everything was "perfect".
- Language:
- English
- Words:
- 559
- Chapters:
- 1/1
- Kudos:
- 4
- Hits:
- 37
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Rebels, Renegades, and Repercussions by AO3 Assistant (pk2317), totally_not_kiki
Fandoms: Keeper of the Lost Cities Series - Shannon Messenger, Percy Jackson and the Olympians - Rick Riordan, Percy Jackson and the Olympians & Related Fandoms - All Media Types, The Heroes of Olympus - Rick Riordan, The Trials of Apollo - Rick Riordan
16 Jan 2026
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Summary
The war with the Neverseen has been hard, and Sophie Foster just wanted a break. She meets a girl named Roxanne at a cafe, and continues meeting her, until Roxanne convinces her to do something terrible. Her friends get upset, yell at her, so she runs away, to Roxanne. She decides to join her in her own rebellion, and they make a plan. Long story short, Sophie gets semi-possessed and must destroy both demigod camps to fulfill the Renegades’ new mission… and try not to get destroyed in the process.
Or, Sophie gets kinda possessed by Kronos, and it doesn’t… exactly go well (for the camps, that is)
Technically a PJO and KotLC crossover, but with a twist >:) -
evergreen as seventeen by Anonymous
Fandoms: Keeper of the Lost Cities Series - Shannon Messenger
16 Jan 2026
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Summary
Marella hands Keefe a slip of paper.
Senior Assassin Target: Fitz Vacker.
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Too Much Like You by MitterBorzoi
Fandoms: Keeper of the Lost Cities Series - Shannon Messenger
15 Jan 2026
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Summary
Nearly a year has passed since the Neverseen has been defeated, and Sophie's life has finally gone back to normal. Until a surprise visit from Fitz where he confesses his still lingering feelings for her, and she must decide what to do about it.
- Language:
- English
- Words:
- 787
- Chapters:
- 1/1
- Kudos:
- 7
- Hits:
- 73