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Thoughts About a Boy by jaywritezshitz
Fandoms: Teenage Mutant Ninja Turtles - All Media Types, Teenage Mutant Ninja Turtles (TV 2012)
07 Jul 2025
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Summary
A series of unsent letters from one Hamato Donatello to a certain Casey Jones; letters which remain unsent, but not unread.
Or: Donnie deals with his obsessive tendencies through writing letters.
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Leo and casey were practically opposites: anti-social vs social butterfly, awkwardly anxious vs unapologetically loud, pessimistically cautious vs optimistically impulsive, anxiety ridden autism vs hyperactive adhd, and most importantly... turtle vs human.
The leader in blue makes zero effort to even speak directly to casey, but when has the vigilante ever been able to help himself? Especially when faced with someone so interesting.
Orrr
leo and caseys first conversations.
Series
- Part 1 of CASEYNARDO
- Part 15 of 2012 leonardo-centric
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The Bisexual and Polyamorous Casey Jones by atmntloric
Fandoms: Teenage Mutant Ninja Turtles (TV 2012), Teenage Mutant Ninja Turtles - All Media Types
15 Apr 2025
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Capritello through the perspective of Casey Jones
Trying to update somewhat regularly but I make no promises and the chapters are pretty short
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Donatello always knew that he was different. Everyone always told him that. His brothers, his dad, even himself. So, when he met a boy who acted like he was normal, he couldn't let him go.
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Family Is Who You Remember by ADHDplusCartonnsmakesCHAOS
Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018)
31 Mar 2025
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"But we aren't. We're talking Hamato clan and lost memories. And the fact that you've forgotten that April's the oldest tells us she's part of the Hamato clan. She's your sister, and you gotta know who she is before we get back. Besides, Casey's your sister and she's human. You don't think shes a real part of your family?"
Mikey and some other mutants are kidnapped by scientists, and only a few of them are able to escape months later. To make matters worse, with his lack of mystic training Mikey had to give up all his memories of the Hamato Clan just to have enough power to break out. Now he and his new... unconventional family are making their way back to New York.
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In the Footsteps of a Child by FadedLilly06
Fandoms: Teenage Mutant Ninja Turtles - All Media Types, Teenage Mutant Ninja Turtles (TV 2012)
15 Mar 2025
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Leo isn’t one to be vulnerable, instead, she buries her problems in hopes they’ll disappear. But sometimes she doesn’t have a choice.
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Leo is sometimes little and her family convinces her that it's okay. (Little Leo oneshots)
Series
- Part 2 of Rottmnt and 2012 Oneshots
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The Punishment Of A Kiss by aethernight
Fandoms: Teenage Mutant Ninja Turtles - All Media Types, Teenage Mutant Ninja Turtles (TV 2012)
14 Jan 2025
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What was supposed to be a simple post-battle kiss turned into a domino effect that slowly and painfully turned Casey Jones into a mutant turtle. As his body (and life) fall apart he decides to complete the mutation and remain in the sewers until Donnie can find a way to turn him back. But it's not as simple as either boy hoped, and the limits of their bond are pushed.
Can they fix their lives and their romantic relationship? Find out in this story about star-crossed teens learning what it's like to really love someone like no other.
Includes art from 'probably-not-a-rutabaga' on Tumblr!
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it's not how you love me, it's the fact that you do by stray_octaves
Fandoms: Teenage Mutant Ninja Turtles - All Media Types, Teenage Mutant Ninja Turtles (TV 2012)
02 Dec 2024
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It's Casey and Raph. Raph and Casey.
What more does anyone need to know?
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Queerplatonic Raph and Casey, except neither of them know what the hell that means and they don't really care.Featuring: Gratuitous violence (because what else would there be in a fic about the two of them), the bros and April being thoroughly confused, and Splinter witnessing the most serious, functional relationship any of his sons have been in in the most unconventional ways.
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Heart Anthology by gracebook
Fandoms: Teenage Mutant Ninja Turtles - All Media Types, Teenage Mutant Ninja Turtles (TV 2012)
29 Nov 2024
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A series of (non-sexually) intimate moments between Raph and Casey. They're boyfriends, your honor. T rated for language.
TW: Graphic Anxiety Attack
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Vigilantism is a valid date night <3 by Misty_Silva_Moon
Fandoms: Teenage Mutant Ninja Turtles (TV 2012), Teenage Mutant Ninja Turtles - All Media Types
08 Nov 2024
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Love comes in many shapes, and some of them just so happen to be fist to the face shaped.
Series
- Part 1 of Casey Jones Casefiles
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It's Not a Fair Fight (Loving You) by gracebook
Fandoms: Teenage Mutant Ninja Turtles - All Media Types, Teenage Mutant Ninja Turtles (TV 2012)
07 Nov 2024
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A late night meet cute. A boy with the greenest eyes Casey's ever seen. College has never been more exciting.
Series
- Part 1 of Battlecouple College AU
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'cause i really wanna stay at your house by aethernight for Imthebest_ever
Fandoms: Teenage Mutant Ninja Turtles - All Media Types, Teenage Mutant Ninja Turtles (TV 2012)
07 Nov 2024
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Summary
When Casey agrees to stay at the infamous 'Lair' in exchange for his sister's freedom, he doesn't expect to form a friendship with its tenant, the human-turtle hybrid Donatello. As the seasons grow colder, the two realize that there might be something there that wasn't there before. But as enemies close in on Donnie's safe haven, Casey is thrown into a world of alien mutants and family feuds. Will Donnie be able to return to his old life with Casey at his side, or will he lose himself to his mutation forever?
Follow this story of drama, pain, and romance inspired by the classic Disney movie with a comic-book twist.
Title from Samuel Kim & Lorien.
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Casey and Donnie are building something together. While Casey and Donnie deal with their life problems, they find comfort in each other.
or
they are gay as shit and flustered as fuck around eachother.
(the spacing changes halfway through im so sorry i didn't notice!! i changed how i space when i wright!!! i am so sorry but i cant fix it!!! AO3 wont let me mb yall!!)
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Shell-Shocked Shenanigans by FadedLilly06
Fandoms: Teenage Mutant Ninja Turtles - All Media Types, Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018), Teenage Mutant Ninja Turtles (TV 2012), Teenage Mutant Ninja Turtles (IDW Comics)
05 Oct 2024
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Info and background knowledge for Mockingbird
Series
- Part 2 of Mockingbird
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Leo wasn't doing well, the world seemed to be against him at the moment. There was only so much of his family ignoring him, so much stress and responsibility that he could take before was unable to function
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leo hurt/comfort, the poor thing just needs a break and it takes him reaching beyond his limits to get it.
Series
- Part 16 of 2012 leonardo-centric
- Part 8 of CASEYNARDO
- Part 13 of the stories of sleepless nights
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Another world (at least I have you by my side) by Sorrin
Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018), Teenage Mutant Ninja Turtles (TV 2012)
10 Aug 2024
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Summary
Leo and Donnie end up in a different universe thanks to a portal mishap with Donnie's machine, now they gotta find a way to get back home.
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In other words it's another "the disaster twins end up in the 2012 universe and are menaces to society and their counterparts" but this time they talk about their emotions and all! Also, small disclaimer, all the info I have about the 2012 show is from the wiki and some random memories I have from like, five years ago as well as random clips I see on Tik Tok and Tumblr.
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Abandoned Work
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Donnie and Casey sitting in a tree! F-I-G-H-T-I-N-G !! by medium_almond_boba
Fandoms: Teenage Mutant Ninja Turtles (TV 2012)
08 Aug 2024
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In Casey's defense, Donnie planning to murder him isn't the most insane thing to happen this week. Is he going to handle this by harassing his could-be murderer? Yes, and really what did you expect out of Arnold Casey Jones Jr?
Or the worst rivals to lovers story ever because they were never real rivals to begin with.
*・゜・*:.。.*.。.:*・☆・゜・*:.。.*.。.:*・☆・゜・*:.。.*.。.:*・☆・゜・*:.。.:*・☆・
Slow updates not abandoned!
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The Good, the Bad, and the Casey Jones by Tae_rhymeswithslay
Fandoms: Teenage Mutant Ninja Turtles: Mutant Mayhem (Movie 2023), Tales of the Teenage Mutant Ninja Turtles (Cartoon 2024)
02 Aug 2024
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Somehow, after saving New York from a giant, mutated fly, Leo, Raph, Donnie, and Mikey get whooped by some back-alley street punk late at night. The SAME back-alley street punk that stole April's scooter. They manage to get away with mild to severe injuries (Raph calls them mild while Leo flips out) and never see that guy again.
Until they go to school the very next day.
Maybe Casey Jones isn't all bad, but he definitely isn't all good either. Maybe he's just Casey Jones. (Maybe it's Maybelline)
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Skate Park Confessions by orphan_account
Fandoms: Teenage Mutant Ninja Turtles (TV 2012)
08 Apr 2024
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Summary
Mikey has been feeling weird and hasn't left his room in hours, so his brothers call Casey to hang out with him. Why did they call Casey, of all people?
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Clowning Around and Other Circus Puns by FanficTimesForFun
Fandoms: Teenage Mutant Ninja Turtles (TV 2012), Teenage Mutant Ninja Turtles - All Media Types
02 Mar 2024
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Summary
Hey guys! Thanks for reading.
In this one, when Casey Jones learned that there was a carnival coming to town, he gets really excited! Come on, who wouldn't get excited? So, after a bit, he thinks about going and telling the turtles about it.
It's a cute, nice, and happy carnival trip where nothing goes wrong at all!
Series
- Part 21 of Not Finished Fics