Chapter Text
Heaven, Hell, Valhalla, Tartarus, all names for different afterlives from different belief systems.
Each one has various descriptions of what they look like, all because Humanity is indecisive and can't settle on a single interpretation of these metaphysical Realms that might not even exist in the first place. Not that she could complain all that much due to also having her own interpretation of these places.
And while she would've liked to observe one of these domains and see what they truly look like, she unfortunately didn't have that option as she got thrown into Samsara and was promptly shat out the Reincarnation Cycle into a brand new grand-spanking body.
'Hi, I'm Asuki Hatashi, and welcome to my new life.' She thought sarcastically as she took in her surroundings. A small dark cramped space currently occupied by only herself and two familiar doggos, one black one white, with red markings on their foreheads. As her eyes got adjusted to the lighting, or lack thereof, she only had one pervasive thought running through her head.
'Oh God I'm in Harry Potter...'
Sighing at the realisation, her mind immediately went into overdrive as she analysed the situation and began making plans for the future.
Ok, so she was already with the Dursleys, meaning James and Lily were dead by Voldemort. Sucks, but sounds about right. Or maybe they weren't dead? For all Asuki knew this was a "Wrong-Boy-Who-Lived" situation and her new parents just got Character-Assassinated instead of being offed, she didn't have a whole lot of information to work with right now so she'll save that possible scenario for later. One thing's for sure though, ain't no way in any of the Nine Hells was she going to be the Dursleys' punching bag! They can take their shitty abuse and shove it right back up their asses where it came from!
Fortunately, it looked like she was reborn with the Ten Shadows Technique, her personal favourite Cursed Technique of them all. While Sukuna's Shrine was cool and the Limitless was OP when paired with the Six Eyes they just couldn't match the versatility of the Zen'in Clan's prized ability. Hell, Mahoraga is the only reason Sukuna was able to win against Gojo by creating a basis for the World-Cutting Cleave through it's adaption, and that's not even mentioning all the subsidiary abilities the other Ten Shadows Shikigami grant the user.
Wait! Hold on! She was getting side-tracked! Goddammit brain, hocus pocus you need to fucking focus!
Alright, who would be her allies and enemies?
.
..
...
Yeah, she's drawing blanks here. Due to all the Harry Potter fanfiction out there literally every character in the damn series can fit into either category, with some works even positing that Voldemort and his Death Eaters are the good guys while Dumbledore and the "Light" side being the evil dickheads that Harry should avoid lest he be used and abused for their own desires before being tossed aside like a broken toy.
Ron could be one of Asuki's most stalwart companions or a lazy food junkie who'd stab her in the back for a Knut.
Hermione could be a studious comrade with intellect and skill beyond her years or a nagging bitch who plans on killing her.
Severus Snape could be a total dick or a misunderstood man whose a total sweetheart once you get past his rough exterior.
Dumbledore could be her most powerful ally or most challenging enemy who wants to sacrifice her for his Greater Good.
Even beloved characters like Sirius, Luna, and McGonagall could just wind up being more people who will try to kill her.
Sigh... The drawbacks of being in the world of Harry Potter...
Ok, she'll work off of what she does know as guarantees right now. She's locked in the cupboard under the stairs, so she can assume the Dursleys are dicks in this continuity, and judging by her current bodily dimensions(That she can currently feel) she seems to be about 4 years old. The two Gyokuken(Who she mentally dubbed Akari(White Wolf) and Yamimaru(Black Wolf)) meant she had the Ten Shadows Technique, so this world might be a Jujutsu Kaisen Crossover, meaning she'll need to be careful of Cursed Spirits and enemy Cursed Techniques.
However, if she's the only person who has Cursed Energy in this world then she has a pretty big advantage up her sleeve, as literally no one, not even Dumbledore, would be expecting her to use anything other than Magic/Mana, therefore granting Asuki the element of surprise against all possible opposition. Combine this with the overwhelming might of the Ten Shadows Technique and she's pretty much set against everyone aside from Voldemort and Dumbledore, the two biggest and heaviest hitters in the Harry Potter franchise, and even then she's pretty sure she won't have to worry so long as she manages to tame Mahoraga.
And yes, that's a tall order, especially for someone who's currently stuck in a 4 year old body, but Asuki has memorised every canon use of this CT and theorised countless more. But most importantly, she doesn't care about playing fair and has no qualms about doing what others would classify as "Cheating" in order to succeed. Plus, it's Cursed Energy, it's whole thing is turning negativity into something positive.
And now she shall begin her bullshitting with a couple of Binding Vows!
Binding Vow 1 - Cursed Tool Creation: She convert an object held within her shadow into a Cursed Tool over the course of 8 Hours, in exchange for disabling all non-Shikigami-related abilities of her Cursed Technique for the same amount of time.
Binding Vow 2 - Selective Creation: In exchange for increasing the time duration of the Cursed Tool Creation Binding Vow to 16 Hours, she can choose the ability given to the Cursed Tool created through the Binding Vow.
There, now every day she can generate a new custom Cursed Tool for herself with whatever effect she wants!
At the cost of not being able to use her Shadows, of course.
Regardless, it's time to start getting stronger! Because like Hell is she remaining with the Dursleys for any longer than necessary.
Step 1: Figure out Shadow Storage and Shadow Travel, as those two abilities will be monumentally useful in regards to her survival(Also, she needs the former in order to make use of her Binding Vows). And in order to use them she first needs to learn how to manipulate her Cursed Energy reserves.
This step was... Surprisingly easy, but understandable as her still-summoned Gyokuken were draining her Cursed Energy, therefore giving her a frame of reference of what Cursed Energy felt like and how it moves, at least in regards to her summons, thus working backwards from there she was able to get at least a basic grasp of how to move her Cursed Energy. It was a slow-going process, but she had years until Hogwarts came to harass her about joining their world, and therefore likely have to fight for her life, either to force them to leave her the fuck alone or countering whatever dangerous bullshit Dumbledore let into the castle for the year.
Seriously, that wasn't even Dumbledore Bashing talking, it's canon that in the first year he used a Three-Headed Dog as one of the protections for the Philosopher's Stone and told a bunch of children not to go to where it's being held, essentially ensuring they go check it out, and he used a basic lock that could be opened by a fucking First Year! An exceptionally intelligent First Year, but a First Year Student all the same! And that's not even getting into his track record with DADA teachers!
Quirrel was possessed by Voldemort, the man who has no problem killing children, Gilderoy was a bumbling idiot and a goddamn liar, Remus may be cool but he's still a Werewolf, Barty Crouch Jr. is one of Voldemort's Death Eaters and was literally the one who set up the Dark Lord's resurrection, Umbitch speaks for herself but Asuki is willing to let that one pass since Dumbledore was forced to let her near children, Severus Snape is a fucking overgrown bully to his students, and Amycus Carrow is another of Voldemort's Death Eaters and literally made students torture each other with the Cruciatus Curse.
...The more she thinks about it the more she wants to avoid Hogwarts at all costs, and that's not even taking into account the Troll, the Basilisk, Peter is hiding as the Weasley Rat, the Tri-Wizard Tournament... Yeah, Hogwarts can go fuck itself. She's not going to risk her life there every goddamn year unless they make it worth her goddamn time.
Wait, she's gotten side-tracked again, back to Cursed Energy training!
Refocusing on the present, she turned her mental gaze inward and immediately felt something... Wrong.
Something sick and twisted, something prickly and bubbling underneath her skin as if eager to be unleashed upon the world and ruin it.
It was a demented presence within her, but one she readily accepted as she knew what it was. Cursed Energy. And it will help her survive.
Sighing to herself, she shifted to get more comfortable before getting to work on her Cursed Energy Manipulation.
It was going to be a long night...
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Adios amigos.