Kira awoke to the smell of blood when he opens his eyes everything is blurry then he gets up and thinks ' dam whatever the hell happened really screwed my body up ' he then looks at his blurred surroundings as see bloody body's in all white with some blue stripes and some body's with hole though them wearing a black shuhakso it was then he realized wear and when he was ' I'm in the middle of the first Quincy and shinigami war ' he also hears that the fight is still going on and he also sees the blurred silhouettes of houses and senses a lot of body's in a bigger house so he makes his way towards it making to so that only a few people could sense him
His eyesight slowly gets better as he walks towards the building by the time he enters he can see everything fine and when he opens the doors he's met with a arrow straight where his heart is but it gets stoped by his aura he then looks at everyone many of which are mothers and children with some elderly and sees a young woman in front of them all with a mature body and a cross shaped bow readying another arrow he then puts his hand up " I'm not here to hurt anyone I'm here to ask if you all want a second chance " she asks " how do we know your not one of those dammed shinigami " he thinks for a moment then he decides he gets [ overlord ] and cuts his wrist lettting the blood fall once it's in a big enough pool he summons a three headed alpha Beowulf and asks " can any of them do this " everyone feels fear when they see the best that sprung from this persons blood he then says " oi everyone calm down they won't bite " the head woman asks " who are you and where are you from " Kira gives his new Grimm some head pats and says " my name is kira starkfire and if you can't tell I'm not from around here " the Grimm gives a delighted noise from the head pats
" listen I can tell you right now your probably not gonna win this war at all " Kira says outright everyone seems unaffected even the kids " and you being here are probably gonna end up dying or taken or worse " yet again everyone seems unaffected but then the head girl says " well then if they come for us then I'll distract them while everyone gets away " Kira shakes his head " not gonna work they'll just catch them I'm giving you all a chance to have a second chance in my world where I come from " the girl then says "and where might that be the hollow world " he shakes his head " naw I come from remenant but something happened that caused me to end up here it's not much different then here only differences would be that there are Grimm aura semblances and Faunus like me " he says waving his monkey tail around but everyone just has a confused look on their faces
Kira huffs and says " I'll go into more detail if you decide to take this chance " the head woman looks at kira then goes into the group where Kira could tell they where talking about the chance kira was giving them after what felt like an hour the head woman came and said " we'll take it but if you try anything " Kira cuts her off " I understand now everybody look into my eyes" he then brings everyone into his kamui dimension which is full of blocks but each block has a piece of some part of nature some have rivers other have huge trees a a few even have parts of a mountain( so basically think obitos ps2 kamui dimension but each block has like I wrote before a piece of nature )
Then he feels a horrible sense of dread come over him as he feels a massive burst of reastu coming his way with an army's worth of bloodlust and at this point in time he could only think of one who could have this much bloodlust and he really didn't want to meet them so he headed towards the forest knocking out both Quincy and shinigami that where in his way
Soon night fell and Kira found a nice little cave to chill in he started a fire to keep him warm after a bit he herd footsteps approaching when he looked towards them he saw a woman with a very mature body and a blade seemingly made of blood with a scary smile on her face " Welp you found me that sucks guess you wont let me leave now huh names Kira " she simply nodded her head and says " Yachiru unohana you seem to have something pent up something that could give me a good fight " Kira thought of a few reasons one his inner hollow two his zanpaktuo or it could be his Grimm transformation but that last one he quickly found that untrue as Athena couldn't have known this would have happened so the other 2 where the most likely
Instantly he pulled out his zanpaktuo to meet unohanas as he felt like [ overlord] wouldn't work or be able to hold her back he found some of the blood had gotten onto him which creeped him out it got worse when he found it was a little acidic he then took out some dust knives and blocked her knife that she hid then he used a myth breath technique' breath of myth 2nd form genesis' he begins to thrust his zanpaktuo at unohana covering her in small cuts she then drops her knife and grabs Kira arm as he goes in for another thrust she then brings down her katana slashing his shoulder down to the start of his waist cutting through his aura like a knife to hot butter
That's when Kira really felt what her bankai could do ( it was never explained in the manga so this is my take on what unohanas bankai does ) he felt the poison entire his bloodstream and then it began to melt outwards leaving only bone so a bit of his rib cage could be seen unohana smirks at this " your still alive after that you might just be the one " Kira laughs and says " yep it takes a lot to kill me so a little poison wouldn't do much " unohana laughs hearing this and says " why don't you use your shikai now " Kira just looks at her smiling " I would of I could actually you mind if we pause this I think it's gotten into my legs to I won't be able to move " unohana looks disheartened hearing that and gets closer to kira with a terrifying frown she says " go all out " Kira just shakes his head and says " nope I'd like to keep my cards hidden if you know what I mean " she's right in front of kira now and he looks and uses one last move ' breath of myth 4th form tenchu ( heavenly punishment)' he swings horizontally just under her cleavage he also nearly cuts off one of her arms then he says " yikes that looks like it's gonna leave scar well I think where just about even now perhaps we'll met again yachiru " he then goes into his kamui dimension leaving a very excited unohana sort of blue balled but she still smiles as she thinks out loud " perhaps we shall Kira perhaps we shall " then she begins to laugh in a yandre way then yamamoto enters the cave and sees unohana all bloody with one of her arms nearly off laughing and he asks "who did this " she stops and turns to yamamoto and still doing her creepy smile and says " someone special " she then leaves the cave and starts healing her self until the wounds are nothing but scars to remind her of Kira
When Kira appears in his kamui dimension he was away from the Quincy and healing himself but it stops healing at a scar which makes him frown as it still somewhat burns so he just thinks that the poison will go away after a bit then he can fully heal he then comes to see the Quincy children playing in the broken puzzle pieces of the forest he meets the head woman who give him her name "my name is Yūki shiyo I'm the defacto leader here got that your just the one bringing us there got it "Kira nods and says "yes ma'am " he then hands her books on remnant and says " you guys might have to study up so we'll wait here until you all finish all these books then we'll head there ok " she grabs them and begins to call the adults together to read and understand the new world " Kira seeing this smiles and head into a large tree and takes a well deserved nap