Hello all, welcome to my absolutely insane idea to try and mix JJK with Harry Potter. Will this end well? Who knows I had the idea at 3am one night and I wouldn't leave my head so now here we are hopefully this will turn out ok. Before we begin I have a few things to say. Firstly thanks so much for being willing to check this out, I love creating stuff, especially more so when people enjoy what I make. Number two, this is my first work ever, there will be mistakes. I am just human so perfection is going to be impossible for me. constructive criticism is always welcome but please don't be an ass and insult stuff just because you can. That helps nobody. Thirdly I am taking cannon (at least for the HP side of things) to a farm upstate, I may get to events on both sides of the series, but JJK starts way later than HP does (high-school compared to 11 years old) that all being said who knows, I haven't made an outline for this yet. One last thing before we get started, I can't keep to any consistent schedule for this, I'm in post-secondary, and also work a part time, my schedule is decently packed. That being said, I will try to post as often as I can. If you have any questions I'll try to get to them in a pre-chapter note, the best place to put them is in reviews.

Oh and uhh maybe don't read this one if you aren't ok with gore, violence, death and a general darker subject matter. So if you don't like that this one may not be for you.

Jujutsu Kaisen and Harry Potter are owned by their respective creators, I only own any OC's that appear in this story.

Thoughts - italics

-{=BREAK=}- - scene change

Chapter 1: The Sorcerer Who Lived

It was safe to say Gojo Satoru was enjoying his vacation. With Japan somewhat settled, and most high-level curses dead and exorcized (for now at least), there was (for once) no need for the honored one. No, for now Gojo could simply be, he could take some time from the blood drenched world he lived in and just be away. Away from the curses, away from the higher ups, away from the unbearable isolation of being 'the strongest'. It wasn't all perfect, nothing ever was but Gojo was somewhat dreading returning back home he'd even made some... acquaintances during his stay, Thomas was nice, and he'd miss him for a bit at least. Those punk ass kids though, Gojo had enjoyed putting them in their place when they tried to mug him. Honestly, he'd never understand why they even tried anything when they were so abysmally weak. They couldn't even throw a punch right! At this rate the only thing he'd be missing would be some curse thinking they could get the better of him, then he'd truly be home. Just replacing the assasination attempts for a really shitty mugging. at the very least a curse would make things interesting for him!

Gojo's thoughts were interrupted as the familiar feeling of cursed energy washed over him pulling him from his thoughts and into reality. It took him just a moment to assess the situation before he began sprinting down the road, passing an old decrepit sign that read "Godric's hollow".

Well shit, guess my vacation's over. How the fuck is there a curse outside of Japan! Cursed energy isn't even supposed to exist here, how the FUCK did a full grade 2 curse even form!

It took Gojo seconds to reach his target, an honestly bland looking house amongst a slew of others, but what he saw was definitely the aftermath of a curse attack. The living room was completely trashed, broken glass and furniture covered the living room carpet, and cursed energy was smothering the place like a blanket. Gojo ran into the house heedless of the still warm corpse at the base of the stairs, that curse was still alive, and based on the panicked screaming and begging from who he could only assume was the man's wife upstairs he felt like he knew where it was. It took another precious second to reach the second floor and by that time another wave of cursed energy had washed over him and the curse had claimed another victim. A red haired woman lay dead at the base of a cradle, a black robes figure standing on her corpse, grinding a heel into her corpse. Gojo didn't need anytime to think on what to do, he had been exorcizing curses since he was 15, he just moved on instinct. He raised his hand, called on his cursed energy and watched as the curse was ripped apart by his technique. He started with the arms, watching as limitless ripped them apart, spewing blood across the once pristine walls of the nursery, then he moved onto the legs and torso, crushing and twisting bone muscle, and organs. A sickening crunch echoed out in the room making his macabre work feel all the more gratifying, a small smile graced his face as he watched blood slash onto the walls of the nursery. Gojo looked and saw the broken form of the curse, he tuned out its screaming, its hatred, its cries for mercy and its insults, they were all inconsequential to him. He moved limitless up to its head, and watched as it twisted and popped like an overinflated balloon.

The room fell silent for but a moment before the screaming of a frightened infant filled the eerie silence. Gojo tuned it out as he stretched his senses outwards feeling for more cursed energy. He had expected to find nothing, hell he had hoped to find nothing, begged that curses weren't appearing in another country, that there wouldn't be even more need of The strongest'' but his hopes were dashed as he felt the familiar hum of cursed energy. He opened the six-eyes and saw an ethereal blue fire surrounding the infant in the crib.

It took Gojo less than a second to pull out his phone and dial his old sensei. His vacation was over it seemed, he had to find a way for himself and a child to get back to Japan.

-{=BREAK=}-

Dumbledore had always thought himself a calm and reasonable man. In fact very little seemed to even phase him, frantic and dire events were handled calmly with little more than a smile and a wave of his metaphorical (and at times literal) hand. But yet, when Minerva burst into his office and told him the Potters had been attacked he felt an emotion he had not felt in ages.

Pure panic.

It crashed over him like a wave of ice cold water and settled into his bones like an unwelcome weight. He had dashed out of his office in a panic and gathered his staff as fast as possible, all the while those damn words rang out in his head.

Albus, the potters have been attacked, the fidelius has been broken!

It took him 5 minutes to round up everyone and apperate to Godric's Hollow, and for a brief moment he had hoped, prayed to whatever god might listen that he would be in time to save his former students. But as he arrived at the Potter household and smelt the iron on the air he knew he had been too slow. James Potter was dead, a destroyed house all to show of his struggle against Tom fucking Riddle, Lilly was no better, she layed in a pool of blood so gigantic that he felt bile rise in his throat from just the sight of it. And Harry, poor sweet Harry James Potter, there was no sign of the boy's body, no sign except the blood that covered the room's walls. Albus felt sick, pure willpower and the memory of the Potters was the only thing that kept him from destroying the entire room around him. Will, memory, and a hatred for the monster he had created. The monster he had taught magic to, the monster so vile, so cruel that he created a spell that could paint the viscera and offal of a man onto a wall like a paintbrush to a canvas. The monster who would use this curse, this abomination, on a child. Dumbledore felt sick. He was distantly aware of Severus falling to his knees, cradling Lily's fallen body in his arms, distantly he was aware of Minerva's tears, her sorrow, distantly he was aware of his own tears, that fell to the ground like rain. He felt like a passenger in his own body, but he was still aware enough to make a promise, a pact, a vow. He felt himself lash out with his magic making every pact he could with whatever he could, a pact that he would slaughter the man responsible for this nightmare, that he would drag them screaming down to hell with him. That he would do everything in his power to ruin the man who painted the walls red with blood. To gut him like a fish even if it meant his own damnation. He reached out with his magic, he felt something settle in his stomach, and a vow was made.

-{=BREAK=}-

The higher ups meeting room had always felt off to Gojo, maybe it was the stale old decor that never changed, maybe it was the dark and gloomy atmosphere, or maybe it was the conservative assholes who used people like pawns in their twisted games. No scratch that it was definitely the last one.

Once again Gojo had to smother the urge to scream as the higher ups put up a facade of debate, like the life of a child, of a baby wasn't being discussed. Gojo knew they wanted to kill the boy, Harry, he thought his name was, (the diaper was kinda hard to read) but Gojo would be damned if he let that happen. He would raise the child, train him to be a sorcerer, one who knew and understood the flaws in their twisted little world, one who would make sure that those flaws wouldn't ever come back after he was gone. Damn what the higher ups thought. It brought a grin to his face imagining what the looks on their faces would be once he told them. Heh~ the old shits really were in for a surprise.

The gravely voices of one of the higher ups died down and eventually at some unseen queue they addressed him.

"Gojo Satoru, we have come to a decision."

"Wowww~ so good for you all coming to one so fast! I thought for sure you had gone senile back there. You sure you don't need more time t-"

The gravely voices of the higher ups cut through the room again, shaper than before.

"Gojo Satoru. The child will die."

Gojo 'hmmm'd' before narrowing his eyes at the higher ups. A cold look settled in his eyes, as he spoke again:

"And why exactly do you think I'll let that happen?" Gojo's voice was without any of his previous levity, now it was focussed, cold and sharp as a knife

"The boy is a rogue. An unknown unassociated with any of the clans. He will d-"

"He will not. Harry will live, he will be trained as a sorcerer, attend Jujutsu high when he comes of age, and he will fight, because he will be alive to do so, not dead at your whims, old man."

The room fell silent for a while, before the higher ups spoke again

"You have no authority to make this decision Satoru-san."

Gojo could only smile in response.

"Of course I do. I am the strongest after all'

Chapter End=

So ends the first of (hopefully many) chapters. Please let me know what you thought about it. Constructive criticism is always welcome. Anyways have a wonderful day/night wherever you are and I'll see you all next time!