Seto Kaiba Petty

Some fics with de-ageing involving least one Danny Phantom character.

Nothing But The Dead And Dying (back in my little town) (AO3) - "Dan has just been rescued and is feeling a bit shorter than usual. Jason Todd has just been petitioned like he's a feudal warlord, which has never happened before but he could maybe get used to. They can probably make this work so long as Batman doesn't stick his nose in. Yeah, like that'll happen."

Dad Shaped (AO3) - "After accidentally getting de-aged by the GIW, Danny and Dani find themselves in Gotham and latch onto the nearest undead person they can find to avoid drawing attention to themselves. Jason, said nearest undead person, makes the mistake of feeding them and now they won't go away."

Raising Phantom AU (AO3) - "Jasmine started working at Gotham's Public Library, while having to take care of her baby brother and going to college. Danny is frustrated at having to be in hiding as well as everything else poor in his life. Also there is something off about the man that comes in to check books out. His family included. Batfamily playing a game to figure out these two's life only for things to get serious quickly."

The Son of the Red Hood (AO3) - "Clockwork intervenes in Danny's life so that he can learn all he needs to be king of the Infinite Realms, and hopefully this time he can actually be loved and cared for the way he deserves."

Imprint (AO3) - "He screwed his eyes shut, held his breath, desperately wished that he was back in his safehouse, alone and blissfully unaware. But the weight in his hands remained, and when he opened his eyes, it was to the bean-shaped 'fuck you' the Lazarus Pit had kindly bestowed upon him, arms and legs folded up against his front beneath off-white muslin while tiny lips smacked softly."

Brevity is the soul of wit so have some more oneshot recommendations. Remember, no being rude to writers and demanding more!

The Fox that Bites the Hand (AO3) - "Fox wakes up pissed off. Which (for a good chunk of his life) has been a normal thing that’s happened often enough it shouldn’t really be note worthy. Honestly, it should be more notable that he’s woken up at all considering he’s certain he just died."

Nonna and the Coruscant Guard (AO3) - "Commander Fox is unprepared for what life is really like on Coruscant. The old woman had led a hard life below, being the unofficial head of the night cleaning staff for the Senate has let her care for her extended family. But in the Coruscant Guard, she sees a new family that needs a nonna."

Oh, Mama, Mama (AO3) - "(Eloise Camden died angry, bitter, and disillusioned. Charlotte Linlin lived on, wild, free, and shining bright. The world was never quite the same after.)"

Baby Skitter in DC (AO3) - "A one shot about Batman's morality and the realities of living in a world with superpowers. Children just don't understand enough to grasp the full picture. When kids can have superpowers that can go very badly, very quickly."

Going Native (AO3) - "The New Guy(TM) at Salt Middle School just wants to survive the school year without having to interact with anyone. Really, he doesn't feel like that's too much to ask. Too bad the Quiet Guy(TM) in his class is ruining his life by showing up with actual choke marks on his neck that nobody else seems to notice for some reason."

Some more age regression/de-ageing fics in the Star Wars fandom.

The Past Does Not Define Us (but it would be nice to have more information from it) (AO3) - "Through a series of events not fully remembered, Din is transported to a completely different planet. With different clothes. And a different age."

Treasured Tribute (AO3) - "Instead of calling for a teacher at the Seeing Stone of Tython, Grogu Sees a chance to change everything. He’s thrown back in time, but his buir Din Djarin is now a teen with dim memories of their shared past, so that’s an unexpected complication."

Mando Back to the Clone Wars (AO3) - "In which Din and Boba are time travelers--and also tiny. Din has no idea what's going on, but focuses on one goal: reuniting with Grogu. Boba's along for the ride. Unfortunately for them, the misunderstandings are only beginning… (Comic/Visual Novel)"

Under Different Stars (AO3) - "The stars, on the other hand…that's a first. Those don't just change. They shift, depending on which hemisphere you're in, but she's studied enough of space to know she isn't looking at the Milky Way."

call me haunting (AO3) - "A six-year-old breaks Granta out of prison on the condition that he help her. Granta maybe should have asked quite a few more questions before he agreed."

Some fics with age regression/de-aging.

If Everyone Cared (AO3) - "Shanks gets turned into a child and runs into Ace, who takes him back to the Moby Dick. Shanks doesn't remember anything past the age of four. As revelations start coming to light, a betrayal rocks the Whitebeard Pirates. The Red-Hair Pirates desperately search for their Captain."

Catching feathers (AO3) - "If there was one thing Ace knew for sure in life, it was that Marco would not and could not die. Still, what happens when he gets really close to death? All Ace knows is that it's somehow his responsibility and absolutely no one wants to answer his questions."

bittersweet between my teeth (AO3) - "Feemor swallows a little, trying not to let his fear show as Dooku goes down on one knee in front of him, gripping his shoulders. There's concern in his face, and he looks the same, but it’s like there's a thin sheen of oil over what should be familiar. The grip of his hands makes Feemor's heart pound, and it shouldn’t, but it does, and Feemor might be barely thirteen, not even a padawan yet, but he knows about trusting the Force, and the Force is saying something is wrong."

what is dead is restless (AO3) - "Really, Granta should know by now not to do favors for Sith. However, the fact that this one landed him with a de-aged Jedi Shadow in his care and Mandalorian Crusaders out for his head seems like something even he couldn't have predicted."

Raising Hell (AO3) - "Jasmine Fenton is a PhD candidate at Gotham University doing her thesis research project at Arkham. She is the daughter of two mad scientists, and has chosen to study confirmation bias among mad scientists. She is on multiple Bat watchlists, and when she has a breakdown at work one day after Thanksgiving break, that sets off one too many red flags. Red Hood goes undercover as her research assistant to investigate her."

Some time travel fics where a minor/supporting character is the one in the past.

dream the crow-black dream (AO3) - "When a dying Hound passes Bana a powerful Jedi relic, desperate to keep it from falling into Palpatine's hands, the very last thing Bana expects is for the Orb of Passage to be a potential fix for the Republic's descent into the Empire. It's only a fix if she can use it, though, and stopping a Sith Lord is going to take all of Bana's wits and skills, as well as a touch of the sorcery that's been forbidden on Humbarine for millennia."

Marching Backwards (AO3) - "Clone 99 was leading five cadets to safety when something happened and they end up in an unfamiliar place and time."

Fox's Great, Very Cool, Totally Fun Dead Adventure (AO3) - "Fox is dead. He is alone here. He probably deserves it. None of this is true."

Footnotes in History (AO3) - "Or: Viserra did not die that night, and instead, the Fourteen Flames showed her the horrors of the future. Forewarned, she will stop at nothing to protect those she loves."

a free bird leaps on the back of the wind (AO3) - "Hyuuga Hinata dies four years after the Fourth Shinobi War, to protect her Hokage. She wakes up ten years in the past, the day before Graduation, the day before the spar that would seal her fate as the family disappointment and Hanabi's as the next Clan Head."

Bonus: When The Small Hand Turns (AO3) - "Shiranui Genma is a shinobi of no major consequence – by which he meant that despite having been the bodyguard of three Hokages (well, five, technically) he is hardly important enough to be the one sent back in time to stop the clusterfuck that is the Fourth Shinobi War from happening…

What it says on the tin - fake dating fics.

punch drunk and without bail (AO3) - "Shepard needs the data on the Reapers that's locked up on the Citadel. She also needs a way in past the security and C-Sec. Which is where Garrus comes in. It's a perfect plan. (So why does he look so worried?)"

a surefire backfire (AO3) - "But even if he had the words for it, there’s no category for what Tycho is to him, no checkbox he can mark that would force Alliance Security to make an exception. Except－ “He’s my husband.”

Hey, Mr. Star, I Think I Love You (Please Love Me Too) (AO3) - "Rising star actor, Marco Newgate, and the darling of the music industry, Spade, are just friends. Good friends who met in the most awkward of circumstances, and hold great respect for each other’s craft. Okay, a whole lot deal of great respect, and there might be a shade of crush here and there, but it’s a celebrity crush and that’s all there is to it. At least, that's what they kept saying. The whole world sure doesn't buy it one bit."

Much Ado about a Lot (AO3) - "Healing a Baby Halfa/revenant is delicate work. It’s real up close and personal. At least that’s what Danny tells himself when he finds himself half-naked in the Red Hood’s bed, the vigilante sucking ectoplasm from his neck like a damn vampire."

This Is(n't) Romance (AO3) - "Slade has a job and needs Red Hood's help."

Some more fake dating fics but not exclusively DabiHawks this time.

You hold my hand, and I forget to fake it (AO3) - "A DabiHawks fake dating au in which Touya wants to piss off his father and Hawks wants the HPSC to stop controlling his life"

I hunt for you with bloody feet across the hallowed ground (AO3) - "A lifetime of hunting demons never prepared Jon for suddenly finding himself the fake ex-boyfriend of a man with incredibly conniving adult children. Jaster, for his part, got in over his head about the time he lied to Arla and Jango about where his hickey came from. The demon hunters are just a little extra depth, at this point."

I'll Fuck You In Love (AO3) - "When Jason finds Nightwing injured in his cabin in the Red Reaches, he’s confused. In order to cover it up, Nightwing decides to pretend that they’re hooking up. Now he’s stuck fake dating the most annoying, hot, reckless, omega he’s ever met. Jason shouldn’t be enjoying it as much as he is."

Existential Crisis Mode (AO3) - "Peter was alone, mid-way through an existential crisis after the Erasure™ and was dreading the upcoming month of May. Jason was sick of people telling him how he felt. ‘You don’t need us anymore,’ Artemis had told him, as if saying it would make it true. As if Jason needed someone to justify keeping them around. But three weeks back in Gotham and all Jason felt was fucking bored and lonely. It was a relief, then, when some random New Yorker was thrown into his living room through a portal straight out of some LSD daydream."

even if it doesn't make sense (AO3) - "Tim had given up trying to lie to himself about how he felt about Jason, hating himself for his childhood hero-worship/crush on the second Robin for coming back. He knew the whole thing was pointless – Jason barely tolerated him, he knew that – so it was better to just acknowledge the feelings, process them, and get rid of them. The last time he’d had feelings for Jason, suppressing them hadn’t worked despite years of trying."

Even more fics where a character or two is fuzzy on details like their real name or where they were last week or why no one can remember them.

I'll Remember You (AO3) - "Jason was just trying not to die; now he's stuck taking care of a mercenary suffering from memory loss who's convinced they're dating."

Narrator Lost (AO3) - "Or the many and varied consequences of wooing the Prince of Faerghus — as recounted by one Claude von Riegan: mildly disgruntled amnesiac and advocate against poor structural maintenance."

This Machine Will Not Communicate (AO3) - "I woke up in a cubicle. This was normal, I knew. I couldn't remember the last time I had been in one, or the first time, or any of the times in between. This, I suspected, was deeply ab-fucking-normal. My head was aching. The organic parts of me felt like they had been scraped over with wire wool. I couldn't remember anything."

Happy Not Knowing (AO3) - "A warlock hits Ed with an amnesia spell and the party goes to Xenk to dispel it."

Welcome to Nowhere (AO3) - "Marco the Phoenix is captured by the marines and taken to Nowhere. It's up to the Whitebeards and one very stubborn marine to save him - that is, if they get there in time."

Some more alt mentor but in fandoms outside the DCU this time.

It takes a leap of faith (AO3) - Desmond Miles (sort of) on Coruscant during Clone Wars.

Stepping Up (AO3) - "Shang Qinghua accidentally brings Luo Binghe in as a disciple of An Ding Peak instead of Qing Jing Peak. Thankfully, there don't seem to be any requirements that he step up and become the new villainous mentor figure, so he decides to ignore the problem until further notice."

The Mad Dog And His Little Trickster (AO3) - "How did Kurusu Akira know how to wield a dagger so proficiently? As soon as he got one in his hands at Kamoshida's dungeon, it disappeared in a flurry of slashes while he killed Shadows with frightening skill and accuracy. Perhaps a certain Mad Dog of Shimano could answer that question; that is, if he didn't already stick a knife between your ribs."

Taylor: Hero of Legacy! (Worm x Super Sentai Generations) (SB) - "During a certain accident, the Shard [Queen Administrator] absorbed the data, fascinated by what she found. The potential of such a device was amazing. Now all she needed was a host with attitude! Eh, Taylor was stubborn. Close enough."

To Be a Spectre (AO3) - "What if Nihlus survived Eden Prime? What would change? At first, it might not seem like much at all..."