One hollow, two shinigamis and three humans are transported to the Naruto world by an Sterneriter. Would they be able to return home or they would be doomed to fight a battle that isn't theirs.
Changing world
Everything began with the decision of hiding in a small room without windows.
It was a strategic choice to laid down for a while, Soul Society under siege and with Yawch, the leader of the Quincy, on the loose, it was necessary to retreat and wait until it was night. According to Uryu that was the moment when Ywach was the weakest.
Ichigo knew they needed all the help possible, but he still felt a sense of dread when he looked at his new "ally". Sosuke Aizen, the most treacherous shinigami in existence, had decided to fight against Ywach, and at some point before Ichigo arrival, he had lost his arm and got a hole in his chest.
Orihime was using her powers on him, he was knocked out, but he was still dangerous. Uryu had his bow materialized and his cold eyes were observing the traitor. Chad was at the left of Orhime, his fists ready to do what was necessary at any false move.
And if having the crazy madman was not enough, Grimmjow was on their base too, his steps echoing in the room annoyingly.
"Something is wrong" Uryu said out of nowhere, the grip on his bow stronger and his eyes scanning the four walls. Ichigo barely registered the words when his world faded.
Their room was enveloped in darkness and the air banished in one second, an unknown voice telling them that even if it costed their life, everyone of his Majesty enemies would be gone.
A blink, an hour, an eternity later, the darkness faded and Ichigo woke up without having fall asleep. He was on a forest and around him all the rest of his "team" layed unconscious and dirty, as if they had fallen to the ground from a couple of meters and knocked out for the hit.
He ran to Orihime side first, checking her calm breath and peaceful face. Her riatsu was as stable as always. Next was Chad, his friend opened his eyes before Ichigo approached him. Grimmjow was the next to get up and Uryu and Orihime regained consciousness almost at the same time.
Only Aizen remained dead cold. At that rate Orihime would have already finish her work of healing before the traitor woke up. If Orihime were a less kinder soul, Ichigo would have asked her to let him without an arm, He was dangerous and Ichigo's friends wouldn't be safe around him, but she was a healer, with an oath akin of a doctor to heal and save. Just in that moment he desired her to stop having such strong will.
Ichigo waved that pattern of thought away, if Aizen got rogue, then Ichigo would stop him again. Simple as that.
"Where the heck are we?" Grimmjow exclaimed loudly and then his teeth clenched before spating at the ground "This reishi ain't normal!"
Ichigo knew that was true, even in the Dangai the reishi had the same familiar feel as it did in the Real World, Soul Society and Hueco Mundo. Wherever they found themselves the reishi felt alien in his skin, it was bearable and his powers were the same, but he still felt misplaced.
"In another dimension" Aizen voice cut the air with his even voice and Ichigo cursed himself for not noticing that he had woken up. The traitor was sat on the ground and Orihime was still working on his arm, but the madman looked as if he had planned everything "I have done studies of portals before, and the reishi from other dimensions is a know thing to me. I have never crossed over as almost every dimension reishi has been potentially toxic. This world at least is compatible with us. But we have a problem."
The man lips curled up and Ichigo felt as if he was facing a teacher in a surprise exam and he had not studied for it.
"There is very little reishi, and different that the one we are used to" Uryu said, he looked at Orihime and Chad first before making an analysis at the rest "Orihime, Chad and me have regained our material bodies back. But the rest of you..."
"What? What's the problem!" Grimmjow snarled but then Aizen gave him a single glance and the Arrancar froze and stopped talking.
"We are made of reishi, we breath and absorb reishi, Grimmjow. Our bodies would be unable to sustain us in a place like this. Even if we were to "take" the kind of riatsu we need from the locals, it would not be enough, our bodies would try to compensate, then will try to eat themselves and later we will break in particles to join the atmosphere...I calculate we have about thirty days before our bodies decide to eat themselves"
Ichigo gulped at that information, Uryu sad expression was all that was needed to know that Aizen that theory was right.
"We will return to our dimension before that happens!" Ichigo said with all the confidence he could master.
"And how would you do that, ryoka?" Aizen smug face was enough to make Ichigo make fists. After some seconds of icy silence the man decided that he had everyone sweating cold and told his plan "It would take years to rebuild a laboratory capable to winstand interdimensional rifts experiments. But, if we want to make that possible, we need gigais. Ichigo Kurosaki, Grimmjow, I have a mission for you"
Steal bodies from a graveyard was the last thing Ichigo imagined he would do in his life, but there he was, alongside Grimmjow digging out corpses of a graveyard of a ninja village they had infiltrated.
They had found the village, "Konoha", just three days after arriving to that world. At a normal pace, it was just about eigth hours away from when they had landed and luckily for them, the world was habited of humans and ones that had enough of similar technology as the real world. There were even telephones polls.
Aizen had sent them to steal all sort of stuff, from paper to medical equipment. The first problem was that around the village there was a shield that had as only opening a gate, so Grimmjow and Ichigo had to be fast when searching all the things that Aizen needed to make a gigai and use sonido/shunpo to have the material things they needed pass unnoticed across the city and the gate (and there were always two guys on patrol there).
They were invisible, but the humans in that world weren't ordinary. They called themselves ninjas and just two days ago Ichigo had seen one walking in a tree, vertically! If that was not enough proof that something was off, when he had stolen material from a school, he saw kids making a sort of magic copies of themselves.
Aizen found that interesting, but potentially dangerous. Time was too scarse to study yet another race, he knew the normal human body of their world, and with that baseline making gigais before a month was possible. Even if according to him, there would be a need to improve their gigais and do a lot of further research. Problem was that; If humans were defying the physical laws with their bodies, perhaps their systems and organs weren't the same and Aizen would have a problem to adjust the parameters of the gigais.
Luckily for them, last week Ichigo and Grimmjow had found a ninja corpse on the road, his soul could still be traced on the fresh body. Aizen had been happy as he made an autopsy and later everyone was happy to know gigais were going to work.
"This sucks!" Grimmjow said again after finishing his digging. On his hands a death man. They needed at least nine bodies and they had only digg out six. Ichigo would had been guilty but as the son of a doctor he knew his fair share about death bodies used for practice.
And well, the fate of his world was at stake, so what they were doing was necessary.
"Next tomb"
When they returned carrying bodies to their secret cave, Orihime gratted them with warm soup. She gave the corpses a sad glance and made a small sign of respect before using her most cheerful face again and telling them to eat.
Orihime and Chad were the ones designated in making food and keeping an eye in the perimeter, Ishida was Aizen helper in his "laboratory". At first no one had wanted to try Orihime strange receipts, but unlucky for them, Aizen said " yes" to every new idea that crossed her head and Grimmjow and Ichigo had to stole from chocolate to carrots that she needed to make her receipts. Sometimes it was good others it was not.
This one was a time of "not"
Ichigo glared at the soup and forced another spoon on his mouth, Orihime was apologetic about the whole ordeal and her brown eyes downcasted every time she ate from her plate, there was an apology on her mouth, hanging in there but was to wise to voice.
No one was petty enough to get mad at the food and taking an apology was a blow to their prides. But that didn't stop them for gulping and making faces.
"Grimmjow, don't let the food go to waste" Aizen was the only one unfazed by the taste of the soup, his eyes were dangerously set in a cold stare towards his espada and his full bowl. For a creepy jerk, Aizen was a man that cared a lot about the forms. The man always ate along them and was respectful in the dinner, waiting until everyone had their plates served to eat and making talks about his advances in the gigais.
Grimmjow gritted his teeth and next he drank the whole bowl at once. Aizen just smiled and took another spoon.
"How long until we have gigais?" Ichigo dared to ask. Aizen was more amicable when eating, so chances were high that he would respond honestly.
"I have to make an autopsy on at least another four bodies before making the gigai. At the same time, I must test our different riatsu over the bodies so I can craft a compatible gigagi. First will be mine, next Grimmjow's and lastly yours, Ichigo Kurosaki. Still, before proceeding, I need fresher data, so tomorrow bring me fresh bodies of the morgue" the man made a wicked smile and Ichigo burrows frowned. "So about eigth days before you have your new body"
"Urahara would have them already" Ichigo said with malice, Aizen did an small gesture of disapproval with his mouth but changed to his smiling face again a second later.
"Gigagi ingenery isn't my field. I prefer to study Souls, barriers and dimensions. Wich coincidentally comes at our favor when being stranded in another dimension"
"Have you created a gigia before?" Uryu asked, more likely wanting to confirm his deductions.
"One time. It come out splendid so I'm confident in my skills. No need to worry. Yet"
Ichigo finished his soup and decided that he couldn't handle more of Aizen games. The traitor wanted everyone on his tip toes, for the apprensive look in Ishida and Orihime faces he had succeeded. Even Chad eyes were observing Ichigo body, scared of the possible end.
Ten days later and Ichigo was inside a gigagi. His new body felt icky on him. It was like having annoying clothes all over his skin. Or skin over his skin.
Aizen had created pretty good replicas of each one of them, some details were off, like a mole in his left shoulder that shouldn't be there or his left pinky having a burn scar. And...small details that as a man were difficult to bear. But the alternative of disintegrating so he couldn't get annoyed about synchronization problems.
Grimmjow replica was brown haired and had not skull outside the skin, so the espada was normally scratching the superfice with his hand, only when Aizen wasn't looking because the pseudo leader of their group didn't like his work scratched.
Aizen gigai had dark circles around his eyes. He had worked in the other two bodies using his gigai and even with high spiritual energy, a human body was still human. Sixty hours without sleep where showing on his fake body and the man had never looked more worn out.
"Fill this form about your gigai, expect a new version in the following two weeks..." Aizen said lowly, his eyes barely open "We will need to move to another place in a short while...the energy we need to sustain the gigais is more easily absorbed by being surrounded of a big number of people"
"Are we stealing people powers?" Ichigo asked alarmed, in his mind imagining himself as a vampire.
"It's just energy being transferred, they would spend less energy on us that what they do smiling. We can't absorb more than that without having our own energy getting away to other people or the environment. That's how gigais work. It takes energy in of the enviroment and don't let ours go out. It would not harm any human" he blinked twice "But as far as I can attest with my gigagi, to keep the homeostasis we need being surrounded by a big quantity of humans..."
"You aren't making sense" Ichigo said. The older man was half asleep and every word was more messy than the last "So, what's the plan"
"Konoha...we are leading to Konoha tomorrow"
In the night Ichigo watched the dark sky, unable to recognize any constellation in the stars. He was trying to make sense of where he was.
He was used to crazy, he had always being capable of seeing ghosts and one time he fought against a giant moth (or Aizen for his enemies). Add that he was a mix of almost every race know in the afterlife and you get a person difficult to faze. So when Ichigo found something crazy he believed he had a good reason to do so.
Waking up in another dimension, one that didn't have hollows, and working for Aizen surely counted as crazy. Oh, and there were ninjas. Magical ninjas.
Magical ninjas with terrible wardrobe choices (he saw a kid was dressed in bright orange buying shurikens!).
Tomorrow, Ichigo mused, that day his world was going to change again.
I only made this fic because I want to do a Naruto vs Bleach characters and need a kind of world building to let it happen.
Oh, and having Naruto interact with Aizen. Naruto knows about loniless and according to Ichigo, Aizen feels alone, will the talk not jutsu work on Aizen heart?
Thanks for reading.
