A/N: Okay, normally, I would write this story after the end of the previous story in this series. However, I figured I would start this while the idea had my attention, and then see where it goes from there. If you wish to know, this story is the direct sequel to Bleach ~Amantes amentes~, so please expect some heavy spoilers for further down the road in terms of the first story.

On that note, feel free to guess what the exact crossover is this time around. I mean, why would I share the details this early? It's outside my modus operandi to do things this early… or so I'd like to say. However, I guess this is where I start making it my modus operandi, to keep the exact nature of the crossover hidden from the rest of you… until the end of the fifth chapter? I don't really know at this point in time. It could be at a future chapter, it could be at an earlier chapter, I don't have a clue right now.

Actually, let me amend the previous paragraph a bit: Other than Dies Irae, Bleach, Katekyou Hitman Reborn and Harry Potter, I don't intend on sharing the list of crossover items for this story. Under all technicalities, this is only a crossover with Dies Irae, Harry Potter, and the list of items in this portion of the "Jump" as I know it. This whole list of crossovers is going to be a rather lengthy one by the end of the series, but it won't be an insurmountable list… or so I think that's the right word to use here.

Okay, let's get this show on the road, shall we? I don't plan to make this be longer than necessary, all things considered, so I suppose I should get ready to show you all what I'm up to.

Mister Potter and the Day of Wrath
by Xamusel

Chapter 01: I'm the Wrong Twin Who Lived?!

So… having read a few dozen fanfics of certain varieties, I can safely say that this is one of those situations I wish I hadn't been born into, especially literally. Personally, though, I blame Mercurius for this one. After living three decades as Kurosaki Ichigo, I couldn't exactly say I wanted to continue on this trek across the multiverse, but I was told, under no uncertain terms, that I couldn't say no to a second stop on the multiverse before I decided if I wanted to go home.

Still, all things considered, I felt I considered my options carefully. It was not as if I could tell him to shove his offer up his ass, where the sun doesn't shine, but that's a different story altogether. Now, then, where was I in this narrative? Oh, right, I remember.

Mercurius told me that I would be born into a world of silly Wizards and Witches, one that had to be saved from a threat on the level of a bet between two entities (no, there is no capital 'E' in that word, I checked) regarding the fate of the world. I don't know which entities they are, but I sincerely hope that it's not who I think it is… wait, I'm still not aware of who made that bet. I'm a baby right now… damn you to Hell, Mercurius!

…*ahem* anyway, back to business.

I wasn't even a year old in this timeline when I felt all the memories sort into place, my cognitive abilities at top gear (to quote a mister Tomari Shinnosuke from Kamen Rider Drive). I decided that I would figure out when in the world I wound up arriving, as I was more than certain that I was in the United Kingdom at that point in time. The architecture was enough to confirm that one for me. I had to figure out when in the timeline I was, as my twin sister and I (yes, this time, I had a twin in my life) were playing around on the ground that our parents had managed to help us play with. Even so… even so, I was not going to be caught unawares as to what was going on here.

Eventually, though, my efforts payed off. The day was July 31st, and I heard with exceptional hearing that our parents were going to be celebrating our birthdays properly… which gave me an epiphany. If the trend I was experiencing so far held true, then this world I was in was going to be a Harry Potter Fanfiction world. I did not want to be the one labeled the "Boy Who Lived", but, if prior experience was telling me the truth, I was not going to avoid that fate… sucks to be me, I know that well.

Still, as someone who was a big brother in the last go-around of life, I wanted to keep that trend somehow. Therefore, I had to figure out which of us were born first, myself, or my sister. I mean, my name was Harry James Potter, right?

As if Mercurius was trying to give me a message or something equally strange, a mirror popped into existence to show me what I looked like… did I really look like a baby version of Ichigo with green eyes? I looked above the mirror to see if it had words on it. Nope, not the Mirror of Erised. Well, shit. It certainly didn't help that my sister looked more like my current mother with violet eyes than anything else…

Hold on a second… my sister didn't have any old variety of violet eyes, they looked more like the eye color of the Britannian Royal Family from Code Geass! I resolutely didn't want either of us to be stolen by the Europia United for any reason whatsoever… that is, assuming that the world we lived in was not the normal Harry Potter world used typically in fanfiction of this variety.

Now, back to the point at hand, and that was… who came first, my sister, or me? I really needed to know that.

Eventually, the birthday party was arranged to take place… although, did it really have to be this late in the day? Let us get to sleep, already, please!

I guess I should be more specific… if the clock was any indication, the day was almost over, literally. How come the two of us were celebrating this day of our birth at this time of the 24-hour clock? I mean, really, what sort of morons are they? They said the overall party would last an hour long, and it's almost 2330 Greenwich Mean Time! Still…

"Happy birthday, Jennifer!" the adults in the room declared for my sister… wait a second. Am I the younger sibling?

Lily—er, that is to say, mum—was about to open her mouth to say something when she looked out the right corner of her eyes, gasping all the while.

"What is it, Lils?" James—dad, I mean, actually—asked mum.

"An owl?" she asked in return.

I blinked in surprise. I thought Godric's Hollow was inaccessible right now?

The other two adults in the room, namely Padfoot and Moony, hurried over to the window to see who the owl belonged to… or so I think that was the case. I was not entirely sure. However, because of my training under Urahara and the rest of the Soul Society earlier in the adventure I went on, I could tell that the owl was delivering a normal package, albeit with a strange purpose to it. Who could have sent it?

The window opened up shortly after, and the owl was let in, since the package was still on its legs. Ugh… security around here needs to be constant and with enough vigilance.

…did I really pull a Mad-Eye Moody here?

"Hello, what's this?" Dad asked, before he picked the package off of the owl. He then seemed to see something attached to the delivery, because he picked up an envelope and read something from it. "To Jennifer and Jacob Potter, from… ah, Wormtail sent us a package for the twins."

My eyes had to be super wide from the surprise. Peter Pettigrew, who I hadn't seen since Christmas Day last year, was sending us a package of some sort… but why?

"I'll read the letter," Dad said, before he opened the envelope.

James had no idea what was going on, but he didn't feel the need to pry the details from Peter this early. For all the wizard knew, the letter and package were just a regular birthday gift for the twins. It was meant to be a good thing, or so he was aware.

That said, however, James was not stupid.

Why did Peter send a package from the safehouse in the first place? He was told, under no uncertain terms, that he was to keep the distance between us as much as possible for everyone's safety. Why did he send us a package and a letter, then?

Unfolding the letter, he took in the sight of the message inscribed. He then began to read the letter aloud.

Dear Jennifer and Jacob,

Happy birthday, both of you. I know your birthdays are connected by the seconds you two were split by, but I still count the birthday the same as if you were both born in July. Don't worry about this old man. Everything I do is for your safety… and your enjoyment.

From this point, your parents need to find a time to give you both little siblings again. Really, you can't be only children at this point without having the chance to get siblings around. Of course, I don't want to be presumptuous. Many of my failures were because I was presumptuous.

Anyway, I hope you two grow up as great siblings, no matter what happens. Love each other like siblings should, okay? Believe me, I don't want you to be wedded to each other. Understand me so far? Seriously, I don't think that would be a good idea for anyone.

To be sure, most of this may seem to be inane prattling from someone who's only related to you as Jacob's Godfather, in place of Moony (for obvious reasons). However, I know that Moony was meant to be the primary choice for Godfather, if it weren't for Greyback. Even so, I will do my absolute best to honor the agreement for both of us.

Then again, I need to ensure my point gets across. Remember, you might live once in this world, but you don't get to let the good times roll before your next adventure starts. Under no circumstance are you to let this mindset take over for you. Trust me, I know what I'm talking about. Have some faith in my wisdom, alright?

In any case, may I give my predictions about how your lives will go from now on?

Keep in mind, in terms of foresight, I am not like the woman Albus Dumbledore, the headmaster of the school I hope you two will be attending once you turn eleven, thought to hire. No, I don't know what possessed the Headmaster to hire a fraud like her, but it had to be a doozy of a reason. Of course, I don't mean to talk bad about the woman, but I can't help but wonder why she was hired. What a shame.

Alright, time to get to the predictions. Both of you are destined for great things, no doubt about that. Of course, I know Jennifer is meant to beat the reputation of women everywhere, given her future actions that I could see. Unfortunately, I couldn't see much in the way of her bloodline quite yet. Truly a travesty.

Yes, I said Jennifer first, but I don't suppose Jacob would want to know what he has in store for himself, would he? Obviously, he is the star of his own story, but he needs the truth about things coming out of the woodwork. Understand that your hope relies on your friends and the power you possess. Remember that for me, okay?

Keep in mind, I don't want to drag this letter on for longer than needed, so I'll be frank. Inside the package for Jennifer is a pair of binding cuffs that will help her restrict the output of her accidental magic issues, while for Jacob, I wanted to give him the best I could under the circumstances. Don't be alarmed, he has a need for the gift I'm giving him. Something tells me he'll need this relic of immense power and importance.

Sincerely,
Uncle Peter "Wormtail" Pettigrew

James knew that the idea for a coded message like this was not entirely original. However, he did know that he wanted to find out what Peter was trying to hide between the lines, and he also knew that this party still needed to be celebrated. Therefore, he decided to do this the right way… for Peter's sake. "Okay, guys, change of plans," he said. "We're letting Jennifer and Jacob open their present from Peter right away, then we're going to have cake and ice cream. I think it's only fair for Peter's sake."

As if this was timed, Jacob began walking over to the present delivered by Owl Mail, stopping once in a while to stabilize himself. Upon reaching the present, he picked it up and promptly, well…

*CRASH!*

…fell down on his bum.

"Jacob!" the whole group of adults gasped in shock, before Lily rushed over to him and picked him up, cradling him and the package in the process.

Not cool, Mercurius, not cool at all. Why did you have me fall down? It couldn't be because of the weight of the package… could it?

In any case, mum was continuing to baby me, which… well, okay, I deserved that one. I wasn't old enough to handle this yet. Well, okay, enough of that part.

Soon enough, I was opening the gift from Uncle Wormtail (and it still felt odd to call him that) with Jennifer, who helped me rip the paper apart from the package. When I saw the contents of the package, I was beginning to worry about the nature of this world. I mean, really… who in their right mind would believe this? I know I got a relic of some sort, but what's so important about this blade-less hilt?

Eventually, though, the time came for the rest of the presents to be opened… for Jennifer. I don't know why it was done like this, mind, but I was not going to begrudge my twin for going first. It wouldn't be cool.

Almost immediately after the last gift was put to the side, the clock struck midnight, and I knew it was August 1st then. Still… what's wrong with this picture? The adults are grinning at me for some reason… wait, hold up, so that's why?!

"Happy birthday, Jacob!" the adults cheered.

I couldn't help it… I actually had to act my age. I clapped like a happy baby would for the sake of getting something good… and, wouldn't you know it, I am a happy baby at this point. I had a successful first birthday celebration!

…well. I get the feeling that my life is about to get rather hectic. How, I don't know, but it will. I just needed to make sure that my sister didn't get ditched by our parents because of some bogus prophecy attachment to me.

Internally, I believe I pulled off the Getter Smirk that comes from piloting a Getter Unit. This challenge was going to be a blast to overcome, I can feel it in my bones. I just hope that Jennifer will be able to handle the stress…

Eventually, All Hallows Eve happened. To my immense surprise, dad was out of the house at the time, citing a problem going on with a friend of his from outside the Marauders. I don't know who this friend is, mind you, but I hope that they don't interfere with dad being loyal to mum.

Speaking of whom, mum had us gathered in the play area of the house, where we had the birthday parties about three months ago. We were being cooed to sleep, and mum was about to give us a lullaby when—

*Ka-BOOOOOOM!*

—yeah, the current Dark Lord thought it was a good idea to attack then.

My first impulse was to cry like a baby that was powerless to do anything, but that was squashed before Moldyshorts showed up. Apparently, Jennifer had the same idea… as in, we both stood up on our feet to see what was going on outside the play area, and saw… yeesh, Voldemort looked ghastlier than I thought possible. Thanks for ruining it for me, Warner Brothers… now the Dark Tosser looked like a zombified snake man!

"Which is your child?" Voldemort questioned mum.

"What are y—?"

"It's important! Which is your child?!"

"They're twins!" mum snapped at the Dark Lord.

"Really, now…?" Voldemort mused, before he started his routine from canon. "Stand aside, woman!"

"No, I won't! Take my life instead!"

"Stand aside, woman!"

"No, I won't! Take my life instead!"

"Final warning… stand aside, woman, for your own good!"

"No, I won't! Take my life instead!" mum yelled out, before the Dark Lord did what he was supposed to do… much as I regret this moment.

"You sealed your fate…" he growled. Pulling out his wand, he chanted out, "Avada Kadavera!" With a bolt of sickly green light shooting out of his wand, Voldemort killed mum… and then he turned to Jennifer. "You first, girl…"

I growled… as best a growl that a baby can do, anyway, before I felt something happen to me. Before the Dark Lord cast his Killing Curse, I heard mum's voice call out to me from wherever the Next Great Adventure was supposed to start off at. It wasn't distinct yet, but I did hear it…

"Jacob…"

It was finally starting to clear up. What was she going to tell me?

"You and Jennifer… will be fine… believe in this truth for me…"

At that point, Voldemort cast the Killing Curse on Jennifer, before it did its canonical routine… while also causing a miniature explosion to create a cut on my own forehead, only it was a single line. This single line was not a lightning bolt-shaped scar, thankfully, and it should heal up quickly… especially since the Die Ewigkeit formula was able to heal me faster than normal.

A few minutes later, Albus Percival Wulfric Brian Dumbledore arrived with our dad and his friends, everyone seeming to be flummoxed by the situation… uh… oops?

"James…?" Dumbledore asked.

"Yes…?"

"What's your son's name?"

"Jacob James Potter, but—" dad started to say, but Dumbledore ignored him, heading to me in the process.

"Everyone, I present to you… Jacob James Potter, the Boy Who Lived!"

This is gonna suck…

This is gonna suck… James thought. How in the world did Albus come to that conclusion? I mean, Jacob doesn't even have the scar! Sighing in irritation, he was about to call the old man out on his blatant lie when he felt his mind begin to cloud over. Wait… is this… the Imperius Curse? But… who cast it…?

"Train your son, James, while I ensure the other child goes to a good home for her," Dumbledore said through the cloudiness of James' mind. "For the greater good, you have to!" Without waiting for James to reply, the old man handed Jacob to his father while walking over to Jennifer. Before the old man got within three feet of her—

"Stop…"

Dumbledore turned to face James. "I beg your pardon…?"

"I… will… train… both… of… them…" James got out. "So… please… don't… do… it…"

Dumbledore lifted his wand again, flicked it in James' direction, and called out, "Stupefy!"

It's official, everyone. Dumbledore's stupid. How come he came to the conclusion that he did? Also, did he really need to stun dad? That makes absolutely no sense whatsoever!

Just my rotten luck…

Eventually, dad woke up from the stun treatment… although, is it just me, or did dad feel the need to give me advanced tutelage for how to fight people like idiotic Dumbledore? I mean, seriously, how come he wants me to fight the Headmaster of Hogwarts? I could've understood if he wanted me to fight the Death Eaters properly… wait, hold up, they're trying to integrate into proper society at the moment. Scratch that one off the list of things I need to do.

Still, at the very least, the common trope of terrible parents has been averted, regarding the common use of Wrong Boy Who Lived fics out there. I just hope that dad doesn't decide to treat those in the Gray or Dark aligned families as scumbags for anything… wait, don't think of tempting it like that. Ugh…

Come to think of it, wasn't Jennifer wearing her gift from Uncle Wormtail earlier? I hope the headmaster of Hogwarts doesn't decide to remove the cuffs… or try to look for the cuffs in the first place, all things considered. I only knew about this because I saw for myself what happened when both of them were on… they went invisible. Dad had to keep mum from panicking when she saw this happen… why was that even needed? Oh, wait, because Uncle Wormtail knew that would happen… speaking of, where is he?

Peter Pettigrew sat in a prison cell, arms cuffed behind his back and behind the chair he was sitting on. How come I got stuck in a Muggle prison to begin with?

"Well, well," a guard spoke up from behind him. "I never would've guessed that someone like you even existed… someone who doesn't officially exist on any record whatsoever. You think you're able to avoid the law that easily because of it?"

What do I do…? How am I supposed to get back to James and the others at this rate?

"Answer, you scumbag! You think that you're able to evade the law because you don't exist on the records?!" the same guard marched up to Peter and slammed a fist onto the center of the back of his skull, knocking him forward and onto the ground.

"Graaagh!" Peter cried out. "Wh… what crime am I accused of, anyway?!"

The guard that attacked him was about to reply to that, but his companion answered, "You have been charged with five counts of manslaughter, fifteen counts of destruction of private property, and fifty counts of evading arrest before now." The companion, a woman, sighed as she further said, "Geez, you sure are a scumbag for these crimes, aren't you?"

"Christine!" the first guard turned to face his companion. "The right to know what he's accused of only belongs to registered citizens of the world! He's not even a—"

"Pipe down, Johnathon," Christine interrupted. "You might not know this, but His Majesty is giving him a chance to clear his currently bad name."

His Majesty? Something tells me I'm no longer in the British Isles…

"But… why would he—"

At that point, the door leading outside opened up, revealing a squad of knights in the modern-day attire of knighthood and a giant of a man. Peter was about to ask what was going on, but Christine picked his chair up and gave him a chance to see who the people were. When his eyes fell on the giant of a man, he gaped. After all, why wouldn't he?

"I see my reputation precedes me," the man said. "After all, you weren't even registered as a citizen yet, and you know who I am."

Peter gasped out, "No… way… you… you're…"

A/N: Okay, leaving it as a cliffhanger for now. Sorry about that, but I still need to finish the first story before I get to the point where I can say will make sense for this story to be written. So… yeah.

Now, for those of you curious, I'm preparing to leave hints here for the foreseeable future about what all the story will do. I plan to give you all a fair bit of interesting stuff to look forward to. Please keep that in mind.

With all that said, I should get closer to finished with Bleach ~Amantes amentes~, so don't expect updates for this for a while to come. Later! ~Xamusel