(A/N: An alternate dimensional worm hole opens in the middle of Karakura town. Ichigo becomes acquainted with an alternate reality version of his world. As the boundaries collapse can Ichigo rise to save the day?)

Disclaimer: Bleach own Tite Kubo

3am Karakura town Sunday

A large wormhole burst open in the middle of the streets as countless hollows poured through followed by a Shinigami chasing them, her Zanpakto sheathed over her back, a large no-daichi in a black scabbard. She was wearing a hood so no one could see her identity, making her appear to be like one of the Onmitsukido but despite being a Shinigami she looked no taller than Captain Hitsugaya. She looked around.

"What the, when did it get dark out it was day time when that weird blast hit the town, but it looks like I'm right here." The girl looked at her watch that read 3pm. "When am I?" she wondered. She then heard the sound of the hollows and got to work.

Meanwhile Ichigo was sound asleep when his badge went off along with Rukia's Soul Pager. Both Shinigami leapt out of Ichigo's window and tore off into the night.

"Getsuga Tensho!" Ichigo shouted destroying a hollow.

"Hado 33, Sokatsui!" Rukia shattered another. The duo cleaved their way east where the hollows had emerged from and were still emerging, while the girl made her way west towards the group. It wasn't long before they met up.

"Oi, you," Ichigo called out to the girl. She saw him and cut down the hollow in front of her.

"Who're you?" she asked Ichigo, she then spotted Rukia, "you," she whispered.

"You know her?" Ichigo asked, Rukia was confused. Just then a Menos wandered out into the open.

"I'll handle this," the girl said.

"You nuts, he's mine." Ichigo held up Zangetsu, the girl's face was in shock at seeing the blade.

"Impossible, that's…" her words were cut short by Ichigo charging forward.

"Getsuga Tensho!" Ichigo fired his attack at the Menos obliterating it. Ichigo returned to the group.

"That appears to be the last of them." Rukia said looking at her Soul Pager.

"Man that was rough," Ichigo sheathed Zangetsu behind his back.

"Hey senpai," the girl said to Ichigo.

"Huh, what do you want?" he asked the girl.

"What is your name?" she asked him.

"Ichigo Kurosaki Substitute Shinigami,"

"Kurosaki?" the girl eyed him up and down backing away slowly. She was in a state of shock.

"Aren't you going to tell us your name?" Rukia asked.

"I know you, you're Rukia Kuchiki." the girl pointed at Rukia.

"Huh, what do you mean?" Rukia asked.

"What do you mean what do I mean? You're the reason I have these powers in the first place."

"Rukia you made another transferral." Rukia shook her head completely confused. "Kid what's your name?"

The girl continued to back away, this is all wrong, she was telling herself, him, her, that sword.

"Maybe Urahara knows something, maybe we should go there?"

"Urahara?" The girl seemed to recognize the name.

"You know him?" Ichigo asked.

"Know him, it's thanks to him I'm a Shinigami again," she pointed to Rukia, "After your brother nearly killed me."

"What?"

"Ichigo this girl, seems to have your memories." Rukia said. Ichigo seemed to understand, everything this girl was saying was something he had been through. Rukia giving him his powers, Byakuya cutting him down, his becoming a Shinigami again.

"Listen kid, I think it best if you tell us your name." Ichigo said.

"I…" the girl was afraid, very afraid. Something's wrong, Ichigo, there's no one in my family with that name certainly not the age he is.

"If you won't tell us your name, can you at least remove your hood?" Rukia asked.

"Ah yes, my apologies," the girl did so without hesitation. Ichigo backed over and tripped over the bench behind him. "What the hell?" Rukia gasped. Both recognized Ichigo's younger sister Karin.

"Karin?" Ichigo gawked.

"Huh, you know my name?"

"Of course I know your name, you're my sister. The real question is what the hell are you doing in Shinigami robes?"

"Listen carrot top, I don't have a brother," Karin snapped getting in his face.

"You want to say that again." Ichigo grumbled. Rukia smacked them both.

"Look I don't know what's going on exactly, but arguing with each other isn't going to get anything solved. Karin could you tell us everything you know that's happened since you "met me" maybe we can understand exactly what's going on."

Karin nodded, "It all began last spring, I was sound asleep in bed when you came bursting through the door." She pointed at Rukia. "You then told me this weird stuff about spirits and Shinigami. At first I didn't want to believe it, but then a hollow attacked my family and you got injured so in order to defeat it you gave me your powers and I became a Substitute Shinigami. A lot of stuff happened after that. You transferred to the elementary school as a Student Teacher, but secretly you were there to keep an eye on me. We spent a lot of time together, you became like my mentor Rukia. Along the way we met Uryu the last quincy, also the most wanted bachelor in the high school, and I met some kids my age at the Urahara shop and because she was around me so often Yuzu, my twin sister, obtained these strange powers."

"What kind of strange powers?" Ichigo wanted to know.

"It's freaky she can use Telekinesis and transform into a tiger, a hawk and a monkey."

"That's…interesting," Rukia said.

Karin continued, "Yuzu wasn't the only one who gained powers. There's this other girl Arisawa Tatsuki, she's my maritial arts teacher. She's a real punk to others around her, leather jacket, headband, motorbike and all that, but she's really cool. She got powers too she can Kido powered Martial Arts its really cool like this one time she threw a punch and it was a fist of flame and another," Rukia cleared her throat indicating that Karin was rambling. The black haired elementary schooler got back on subject, "A-anyway, not soon after Yuzu and Tatsuki gained their powers was Rukia to be called back to Soul Society for execution. Uryu was injured trying to stop that and I took to the scene. I was defeated by Rukia's older brother Byakuya Kuchiki and woke up in the Urahara shop. Urahara then helped me become a Shinigami again. I then wanted nothing more than to stop Rukia's execution. Yuzu, Tatsuki and Uryu wanted to come with me. Uryu and Tatsuki told our parents that we were going on a summer trip for education purposes. Dad bought it pretty well and Mom signed the "papers"."

"Whoa, wait hold up, you're mother's alive!" Ichigo freaked. Rukia smacked him

"Let your sister finish." She told him.

"Anyway, so Uryu Yuzu, Tatsuki and this cat Yoruichi and I went to Soul Society to rescue Rukia. We fought our way through numerous battles to rescue you," she said to Rukia. "I fought the 3rd Seat of the 11th division Ikkaku Madarame, I fought Renji, again and I even went head to head with the toughest Shinigami of all."

"Kenpachi Zaraki," Ichigo muttered under his breath, Rukia used a binding spell to cover his mouth.

"As I was saying," Karin's eye twitched, "I defeated Kenpachi and later was determined to defeat Byakuya. However, in order to do so Yoruichi taught me how to use Bankai. I then later fought Byakuya and I won, but I discovered a problem within me that I had a hollow building up inside me. Aizen then later betrayed Soul Society, taking the Hogkyoku from Rukia's body and Yuzu, Uryu, Tatsuki and I left Soul Society. Since then Aizen sent two Arrancar to attack Karakura town and later this girl Hiyori who seemingly transferred into my class suggested that I become a Vizard in order to subdue my inner hollow. I had just completed that and was out for a walk when this large portal opened out of nowhere and brought me here."

"I see, Ichigo now you may speak." Rukia told the orange haired Shinigami

Karin looked at him "Yes, tell me what you've been through." Ichigo explained his adventures up to this point, most of it matched Karin's story except for several factors such as Masaki Kurosaki being alive from wherever Karin was from and the people that were surrounded by both substitue Shinigami.

So I was right, Mom's dead because of me, Ichigo told himself.

"Rukia have you come to any conclusions from this?" Karin asked.

"This is just a hunch, but I believe we may be dealing with alternate realities."

"Alternate realities?" Ichigo asked.

"It's entirely possible, but let's go to Urahara's to make sure." Rukia stated.

Both substitute Shinigami nodded.

Once at Urahara's Rukia knocked on the door.

Urahara opened it, "Rukia-chan it's 3 in the morning can't it wait till after sunrise?" he rubbed his eye.

"I'm afraid not." Rukia stepped aside revealing Karin and Ichigo in the moonlight.

"Good evening Urahara Kisuke-san." Karin bowed low.

"Oh yeah this is definitely not normal, come on in, make yourselves at home, should I wake Abarai-san and Sado."

"That won't be necessary," Rukia shook her head.

"Fair enough,"

All four sat down inside, Rukia explained what they had learned and her hunch.

"Hmm, I'm inclined to agree with you Miss Kuchiki it seems to me like this Karin is from an alternate dimension, a dimension where Ichigo doesn't exist. This is very curious."

"Are you sure?" Karin asked.

"Well there's one way to find out, follow me to the basement." Once in Urahara's training facility Urahara spoke to Karin. "I want you to call out your Zanpakto, if my hunch is correct, and it probably is, all three of us hear know the name of it without actually knowing it."

Karin nodded and drew out her Zanpakto and swung with both hands. "Protect!" she shouted and swung again "Zangetsu!"

Ichigo's eyes grew wide in amazement as the girl who was an alternate version of his sister called out her Zanpakuto, his Zanpakuto. It was exactly the same as his in every way shape and form. Both blades were identical.

"What the hell Hat and Cloggs?" Ichigo demanded.

"It's just as I predicted," Urahara said.

(A/N: An alternate world where Ichigo doesn't exist and Karin is a Substitue Shinigami and has Zangetsu what have I done LOL? Let me know what you think of this fic. If you read the fic this was inspired by, you'll notice that I changed a few things from the alternate world, but that's for the sake of creating a story. Still Two Zangetsu's, what will happen? You'll just have to wait for the next chapter that's all.)