Mayuri Kurotsuchi gazed at the test tube in his hand, containing reiatsu that glowed with golden light, his excitement palpable:

"When I first arrived in Hueco Mundo, I collected residual reiatsu from Shiroha Uehara. These energy signatures penetrated space itself and enveloped all of Hueco Mundo, making them invaluable for research. Later, with the assistance of data found here, I discovered these reiatsu particles contain spatial manipulation properties. This spatial power surpasses even the most advanced technology from the Research and Development Institute. Though Szayelaporro's research on this reiatsu is rudimentary at best, it provided some reference points. I've improved upon his findings to develop a new technique. With it, I can utilize these particles to open a relatively stable dimensional passage directly to Karakura Town in the World of the Living. It's unfortunate that samples are so limited—I can't research anything more substantial. Otherwise..."

At this point, Mayuri felt as if something was lodged in his throat, causing him considerable discomfort.

In truth, the power and mystery contained within this reiatsu were a hundredfold greater than what he had described.

He even suspected that Shiroha's power approached that of the Soul King himself.

This high-level reiatsu held immense research potential, with limitless applications and endless mysteries.

The power that both warriors and scientists had pursued for centuries could almost be realized through this reiatsu.

It was a transcendent power—a power only gods should possess.

For scientists like himself, this reiatsu represented an irresistible temptation.

The problem was that he possessed too little of it, and he needed to expend what he had opening the dimensional passage.

Most troubling was that faced with such extraordinary reiatsu, Mayuri had no idea where to begin his analysis.

He was like an elementary student who had somehow obtained a university-level quantum physics textbook.

Even if he studied it to pieces, comprehension would remain beyond his grasp.

Far from analyzing its mysteries, he couldn't even begin to understand its basic properties.

An immensely tempting treasure lay before him, but he lacked the capability to access it.

The situation was excruciating.

Ultimately, Mayuri chose to use the samples practically—out of sight, out of mind.

Though wasteful, he saw no alternative.

For now, it was the optimal choice.

In the Ice Palace, Shiroha attended to the increasingly relaxed Neliel.

After a while, she returned to her smaller form and drifted to sleep with a contented smile.

The significant energy expenditure had forced her into an energy-conservation state.

Yoruichi Shihōin, ever restless, was preparing for the upcoming conflict.

At that moment, Shiroha sensed a peculiar connection through his own reiatsu.

He instantly became aware of Mayuri's activities.

He discovered the scientist was using his reiatsu to open a Garganta.

Though it was merely residual energy disconnected from his primary spirit body, without Shiroha's consent, none could harness the spatial properties within it.

This level of spatial manipulation was power exclusive to Shiroha. No matter how others might covet or study it, they could never claim it as their own.

Considering that Mayuri had always been reasonable, and that Unohana would eventually be his ally, he granted permission to use the residual reiatsu.

It was merely a Garganta, after all. Even without his reiatsu, Kisuke Urahara could have managed the task. The moment he granted authorization, Shiroha sensed activity from the beacon he had placed on Rangiku Matsumoto.

Rangiku was utilizing Haineko's Shikai against Harribel's three female Fracción.

As a wind-type Zanpakutō, Haineko's blade dissolved into ash upon release.

With a simple swing of the hilt, Rangiku could control the ash particles for offensive maneuvers.

This attack method bore similarities to Byakuya Kuchiki's Shikai, Senbonzakura.

Haineko also provided defensive capabilities, making it a formidable technique for both offense and defense, much like Senbonzakura, and particularly effective in battles against multiple opponents.

With her enhanced Shunpo, Rangiku could engage three enemies simultaneously and even gain the upper hand. The three Fracción suffered considerably due to their miscalculation of Rangiku's strength and Haineko's capabilities.

Their bodies were lacerated by Haineko's ash, resulting in numerous minor wounds.

If not for the Arrancar's Hierro providing defensive protection, they would have collapsed with severe injuries.

In the original timeline, Rangiku had required Momo Hinamori's assistance to fend off these three opponents.

Now, she accomplished the task alone.

Her strength had improved dramatically compared to her original potential.

After fighting for some time, the three female subordinates ceased holding back.

This Shinigami woman was too elusive, and her Zanpakutō's abilities proved more troublesome than anticipated.

Having dragged the battle out for so long, they felt they were disappointing Harribel.

They resolved to fight earnestly and not embarrass their Tercera Espada master.

Three commands echoed across the battlefield:

"Thrust, Cierva!"

"Devour, Leona!"

"Strangle, Anaconda!"

Following their Resurrección, the three women transformed into bestial hybrids—a deer, a lion, and a snake.

Simultaneously, their injuries healed completely, and their abilities and strength increased dramatically.

With their reiatsu surging, they launched their coordinated attack.

Apache, "The Deer," charged with her antlers; Mila Rose, "The Lioness," swung her massive two-handed sword in a devastating arc; Sung-Sun, "The Snake," whipped her elongated tail behind her as she lunged toward Rangiku.

Facing this fierce assault from three powerful Arrancar, Rangiku remained composed, employing Shunpo to evade.

The transition from stillness to motion was nearly instantaneous.

Relying on lightning-fast Shunpo, she successfully avoided their combined attack.

"How did you dodge that?! What just happened?" After striking nothing but air, Apache roared in frustration.

They had been outmaneuvered by their enemy's speed multiple times.

This enraged her beyond measure.

This damned Shinigami was too slippery—even their pesquisa couldn't track her movements.

Mila Rose analyzed the situation solemnly:

"She's using that Shinigami technique called Shunpo. It's a high-speed movement similar to our Sonído. However, her reaction time is exceptional, and her initial step velocity is impressive. This isn't ordinary Shunpo—it must be some advanced variation. She shouldn't be able to maintain this pace indefinitely, or we would have been defeated long ago."