Hey there everyone. This is my first Bleach fanfic, so I hope you all enjoy it!

Disclaimer: I do not own anything in this fic except for my own ideas and concepts.

Ambush

6th Squad Lieutenant Renji Abari ran through the narrow ally, occasionally looking over his shoulder to make sure he wasn't being pursued by the enemy. He had been running ever since that last skirmish, and he finally needed to stop. He leaned against the wall and gasped for breath.

All around him he could hear unearthly roars from his enemies, and the death screams of his comrades.

Around two hours ago, large holes had opened in the sky above the Soul Society and massive amounts of hollows had come pouring out. The Gotei 13 had been caught completely off guard, the result being that the squads were spread raggedly across the Seireitei.

Captain Kuchki had ordered Renji to take an advance squad of men out while he organized the rest into battle formations. They had slain several of the beasts, but in the last skirmish, Renji had been separated from his men during the fighting.

But not for long.

Renji heard shouting from up ahead, and recognized some of the voices as those from his advance squad. He rushed to the source of the shouting, holding Zabimaru at the ready.

"Hold on guys," he thought, "I'll be right there!"

He prayed he would be in time.

The 6th squad advance force stood with their zanpaktos drawn and in a tight battle formation ready for anything the enemy might throw at them.

It was a useless gesture.

They stood facing more than two dozen hollows, all of them huge and too powerful for them to fight off. The monsters lunged at them, ready to devour. They braced themselves for the end.

It never came.

"BANKAI!". The squad opened their eyes, disbelieving. But it was true. Their lieutenant stood before them, a fur cowl draped around his shoulders, a massive wooden snake emerging from Zabimaru's hilt, facing the hollows, who had paused in their attack to assess this new threat.

"Get back to the captain now," Renji growled to his men, never taking his eyes off of the hollows, "I'll take care of this."

"But, lieutenant-," started one of the men.

"That's an order," Renji yelled in their direction, "Now get going! NOW!"

"Yes lieutenant!" the men shouted, and they turned and ran, disappearing around the corner. Renji turned his attention back to the hollows. "Alright then. Now back to business…"

The hollows lunged. Renji tightened his grip on Zabimaru's hilt and sent his snake-like sword rushing out to meet them head on. "HIKOTSU TAIHO!" A massive blast of spirit energy exploded from Zabimaru's mouth, obscuring all else from sight with a huge blue flash.

Hueco Mundo

"Lord Aizen, we are pushing the Soul Reapers back towards the center of the Seireitei. We have taken minimal losses of the hollows, and seem to be overcoming them in most areas," reported the minor arrancar. "Good, very good," murmured Sosuke Aizen as he slumped in the throne like chair, "And what of Ichigo Kurosaki?"

"A spatial disturbance has been detected in North Rukongai, we believe that may be them preparing to enter the gate," the arrancar reported.

"Excellent"

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World of The Living

"Is everyone ready? Make sure you use the bathroom before you leave, there won't be time when you get there," said Kisuke Urahara with a grin.

Ichigo Kurosaki surveyed their little group. Chad, Orihime, Uryu and Yoruichi all nodded their readiness.

"Open the gate Kisuke, we're ready!"