In which I watched the Diamond Dust Rebellion movie, took the King's Seal existence and run away with it. I mean, let's be honest, as far as time-travel goes, this thing is the only more or less canon artifact that can do it. Yes this is one of those where Ichigo goes back in time, but boy oh boy, is he traumatized. I mean, can you blame him ? He is like seventeen and went to war and watched people die. Of course he isn't going to be okay ! He probably will be OCC, but then it is intended. War does shit to people and PTSD is real, even with the Soul Reapers.
I would also like to ask for people to be kind in the comments, english isn't my mother language I'm trying my best. On that note, enjoy !
Chapter I – Duality
Dual wielders were unusual, when it came to Zanpakutō. As beings forming from the soul of their Reapers, a double sworded individual generally spoke of a duality in its own personality or soul. Some would say, a contradictory or paradoxical character. Only two active and alive Reapers could claim to be such uncommon cases : Jūshirō Ukitake and Shunsui Kyôraku. If those two were as much as odd as their own duality concerning their swordsmanship, it was with a kin sense of comradery that they had their friendship. Two old souls, remembering what was and looking forward to what could be.
Now, that was not to say they were the only ones able to do so. Not that the Soul Society knew of it, as Kisuke Urahara found himself quite new to this predicament himself. Tipping his hat in a perplexed, if not nervous manner, he had to admit he hadn't quite forseen this situation. Not that he was expecting Kurosaki Ichigo to be any less of an impressive being seeing as he was much of an oddity in himself, but the shopkeeper was feeling rather envious of this rare occurrence if not a little fascinated by it. He did wonder if the nature of the young man was at fault for such a feat. Surely, considering that from blood and bones to Soul and Reiatsu, he was a hybrid out of proportion, for even Aizen to understand what kind of monster in sheep clothing he had created that fateful day.
Isshin had been too much of a barking dog and a poorly trained shepherd, when it comes to his own son and daughters. Ichigo was much of man, if not more, than the old captain, now a mere human pretending with a false might to care enough to ghost over the house. Despite his incredible tight schedule before even the event that lead to this day, the teen had tried and more or less succeeded into parenting his own sisters with more love and care than his own remaining parent. Kisuke, while not in his place, did wonder if Masaki was turning in her grave from this aggravating turn of misfortune. But then again, Urahara was his own brand of asshole, so maybe talking of Isshin was rather hypocritical of his part. After all, Kisuke was as much of a monster as Aizen was and still is, if a different breed.
That was another matter, at any rate. The actual problem, however, asked the impossible of him, one he couldn't provide a solution for, but he could at the very least give enough of a starting program that the poor sod wouldn't end up dead before the start of the assault and rescue mission. After that, Kisuke was free from any bloodshed and bloodlust that may follow… Or maybe not, but he didn't dwell that much on that. Ichigo had no training when it came to Zanjutsu even less so, a dualling style. Coordination, fluidity and an incredible ability to process informations fast and react on instinct was not something that could be acquired in a secret basement with only a few days. Even himself couldn't quite give him what he truly needed for that.
If Kurosaki Ichigo was a Visored, he also would be, by default, both Quincy and Shinigami. Now, that was some horrible blended chimeric nightmare, but the problem actually lied within the inner world of the only person that should know the truth and yet couldn't even grasp half of it for what it was. Isshin had probably kept silence as a golden rule and Kisuke didn't felt like opening this can of worm he actually help create, and then proceeded to put rotting corpses above before sealing it to its own fate. Maybe he should have intervened sooner, but then, his past actions had set in motion a butterfly effect he couldn't really predict nor wanted to interact with.
Maybe he should have thought about that more, but it was a bleeding, infected wound he wouldn't touch with a ten-foot pole. If demons of guilt could have demons of regret, he was sure he had plenty flanking him like a swarm of flies.