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The Transmigration of Aizen Sōsuke

When a mysterious phenomenon caused by the Hogyoku transports Aizen Sōsuke, the cunning and manipulative former captain of the Soul Society, from the world of Bleach to the Naruto universe, the balance of power is disrupted. As he awakens in an unfamiliar environment, Aizen realizes he must adapt to this new world and find a way to achieve his goals amidst unfamiliar faces and potential dangers. ... This is my first time writing, I'd appreciate if you leave a review. I don't own anything, except OC characters. Aizen in this fic is a bit less reliant on the Hogyoku and Kyoka Suigetsu, and I also decided to use his TYBW arc personality.

moonmirror · Anime & Comics
Not enough ratings
16 Chs

Sage Mode

As Sora bathed in the oil fountain, he could feel the natural energy coursing through his entire being. It was like being embraced by the ancient power of the world itself. As he experienced the surge of natural energy within him, he felt a burning desire to test its combined power with his spiritual energy or chakra. The temptation to unleash this newfound potential was strong, but he remembered Aizen's words about staying focused and maintaining control.

He turned to Aizen, his emerald eyes gleaming with excitement and anticipation. "Aizen-san, is it fine?"

Aizen, already knowing what Sora wanted to do, observed his eager expression with an indifferent look on his face.

"Yes, Sora," Aizen replied with a slight smile, "you may go ahead and test it, but be careful."

Stepping out of the fountain as the oil dripped from his body, Sora took a moment to center himself, and took a deep breath as he closed his eyes. He began to focus, drawing in the surrounding natural energy, while finding the neccesary amount of spiritual energy to balance it out.

"Reikon no Senjutsu!"

As he said those words, an ethereal blue glow mixed with green began to emanate from his body. As he opened his eyes, they also undergoed a change, taking on a vivid hue that matched the color of his aura. Additionally, intricate black markings appeared on his face, spreading out to both of his arms.

As Sora became attuned to this merged state, he felt an immense surge of power flowing through every fiber of his being. It was as if the very essence of the world had become an extension of himself. He could feel the life force of all living things around him, their energies resonating with his own.

In this mode, Sora knew he couldn't use chakra currently, as it would distrupt the balance between spiritual and natural energy. He felt his physical prowess was boosted immensely, and his senses were significantly heightened.

As he moved, he realized that his physical abilities had indeed been heightened significantly. His speed, strength, and agility had all increased to astonishing levels. It was as if he had become one with the very essence of nature's grace.

Sora decided to put his new abilities to the test. He focused on a nearby boulder and, with a swift motion, leaped towards it. His movements were almost effortless, and as he landed a powerful kick, the boulder shattered into pieces. He felt the raw force behind his strikes, and it was evident that the Reikon no Senjutsu had granted him immense physical power.

But it wasn't just his physical prowess that had been enhanced. Everything that needed the use of spiritual energy was also amplified immensely, so with that in mind, he wanted to test out how powerful his Kido is in this form.

He focused his mind and channeled spiritual energy into his hands, ready to perform Kido beyond anything he had accomplished before. The intricate black markings on his face and arms seemed to pulse with energy as he prepared to unleash his enhanced spells.

As Sora chanted the incantation, his voice resonated with power and conviction. The atmosphere around him seemed to respond to his call, and the very air became charged with energy. His emerald eyes glowed with intensity as he focused on the spell.

"Ye lord! Mask of flesh and bone, flutter of wings, ye who bears the name of Man! Truth and temperance, upon this sinless wall of dreams unleash but slightly the wrath of your claws!"

"Hadō #33. Sōkatsui!"

Blue and green energy began to gather at his palm as he finished the incantation. The blue and green hues of his aura swirled and danced around the concentrated energy, creating a mesmerizing display of power.

With a swift flick of his wrist, Sora unleashed the Sōkatsui into the forest, and a large wave of energy shot forward like a roaring azure-green comet.

The wave of energy tore through the forest, leaving a trail of destruction in its wake. Trees were uprooted, and the ground shook as the powerful blast surged forward. Sora could feel the immense power he had unleashed, and he was both amazed and slightly overwhelmed by the sheer force of the Sōkatsui in his current state.

As the wave of energy subsided, Sora took a moment to catch his breath and assess the aftermath of his attack. The area around him was in disarray, with debris scattered all over the forest floor. He realized that his control over the merged power of Reikon no Senjutsu and Kido needed further refinement.

This attack took a lot out of him, as he was sweating a bit, and also feeling like he depleted a quarter of his spiritual energy. Aizen was watching everything that happened, while he also placed multiple barriers and seals around the God Tree.

Sora took a moment to regain his composure, knowing that using such a powerful attack had its consequences. He could feel the strain on his body and the depletion of his spiritual energy. The merged power of Reikon no Senjutsu and Kido was undoubtedly potent, but it required careful management to avoid exhausting himself.

Aizen approached Sora, his expression still calm and collected. "Impressive display of power," he remarked, "but it's time to go. The toads are coming."

After undoing his Sage Mode, Sora nodded, acknowledging that the toads will come after hearing the commotion he caused.

As the Moon gazed upon them, they walked in silence, each lost in their own thoughts, however, they were interrupted as a group of rough-looking people, presumably bandits, appeared.

The bandits emerged from the shadows, a group of rough-looking individuals with malicious grins on their faces.

The leader of the bandits, a burly man with scars crisscrossing his face, stepped forward, brandishing a rusty sword. "Well, well, what do we have here?" he sneered, sizing up Sora and Aizen. "Looks like we stumbled upon a couple of travelers who wandered into the wrong territory."

The bandit leader continued to sneer at them, his scarred face twisted in malicious delight. "You two look like you might have something valuable on you," he said, eyeing their belongings with greed. "Hand over all your valuables, and maybe we'll let you leave with your lives."

However, to their disbelief, the duo continued to walk, as if not even acknowledging their presence.

The bandits were taken aback by Sora and Aizen's lack of reaction. Their confidence wavered, unsure of how to respond to the seemingly indifferent travelers. The bandit leader, though surprised, quickly regained his composure, thinking that Sora and Aizen were simply arrogant fools.

"You think you can ignore us and walk away? You must be out of your minds!" the bandit leader barked, his anger flaring as his ego was bruised.

Sora and Aizen's calm demeanor didn't waver as they continued to walk, approaching the bandits without a hint of fear or hesitation. It was as if they held an unspoken confidence in their abilities that unnerved the bandits.

"Last warning, hand over your valuables!" the bandit leader growled, raising his rusty sword threateningly.

Finally losing their calm after not getting a reply again, the group of bandits rushed forward with rusty swords in their hands. The bandits closed in on Sora and Aizen, their malicious grins returning as they anticipated an easy victory. But as they got closer, a subtle change occurred in the atmosphere around Sora and Aizen.

Without any visible movement, Sora released his spiritual pressure. The air seemed to grow heavy with an intensity they could not comprehend, and their body twisted in unimaginable ways as they died with disbelief and horror written all over their faces. They were just ordinary humans, and Sora's spiritual pressure has already surpassed that of low-level captains.

"Haah, this is why I suggested we don't walk, Aizen-san," remarked Sora, as the last of the bandits fell to the ground lifeless.

Aizen smiled at the remark, "I didn't expect you to kill them."

"I didn't expect them to be so foolish," Sora replied, his expression serious but tinged with sadness. "I never wanted to take their lives, but they left me with no other choice."

[A/N: Check out my new Jujutsu Kaisen fanfiction!]