Author's notes: Okay, so this is my first story in a really long time. I probably wrote and rewrote this story's plot many ,many times.

My previous stories I either removed or put on indefinite hiatus. Hopefully I have the strength to finish this one.

Some of you will see similarities between this story and the Eyes of the Soul by Operation Meteor. I was very inspired by his stories and decided to write on myself.

This story is very Itachi-centric, so non-Itachi fans or Itachi haters should stay clear for this story. I will probably revise chapters as I write as I am seeking to add more!

Prologue Chapter: The Phantom of the Past

The Garganta yawned open, a void of swirling darkness as Aizen stepped into the rift between worlds via Negaction. The faint hum of the dimensional tear reverberated in the silence, a harbinger of the chaos he had left behind. Aizen paused for a moment, casting one final glance back at the Seireitei, where the broken pieces of Soul Society were just beginning to settle.

"You believe you can stand above everyone else, Aizen?" Jushiro Ukitake's voice called out, strained but unyielding, cutting through the silence like a blade.

Aizen didn't bother to turn. Instead, he let a faint smile creep onto his lips, a smile that held neither malice nor regret, but something more enigmatic. "Stand above? Yes. I'll be the one to shape a new world—a world where my vision dictates the course of history."

Ukitake's gaze narrowed, a spark of determination igniting in his weary eyes. "You'll only stand at the top if you can surpass a certain individual—someone we both know well. Do you think he'd understand what you're doing?"

For the briefest of moments, Aizen's smile wavered, replaced by a look of contemplation. "He would. He always did. He was the only one who ever truly understood me, the only one I ever respected. I'll create a world he'd be proud of."

"Do you think that is what Itachi wanted?" Ukitake finally spoke out the name, a name which invoked different reactions in the Captains present. Ichigo saw the instant shift in air, as Aizen was no longer silent. He almost seemed sad...nostalgic.

"It was your weaknesses that drove him away." Aizen spoke, with a hint of venom that wasn't heard from him before. "He left so that all of you wouldn't fight over each other." He, Gin, and Tousen nearly reached the darkness. "He could have made all of it so much better. But he didn't because he cared too much for you. I suffer no such sentimentality for you."

With that, Aizen and his two lieutenants vanished into the darkness, leaving behind a fractured Seireitei and a lingering sense of unease. As the captains regrouped, tending to their wounds and grappling with the reality of Aizen's betrayal, one name began to surface, whispered with a mixture of reverence and trepidation: Uchiha Itachi. Only until the tapping of the cane by Captain Commander Yamamoto was there silence once more. But that left Ichigo wondering even more.

Later...

Ichigo Kurosaki wandered the winding corridors of the Seireitei, the weight of Aizen's final words pressing heavily on his mind. Who was this person Aizen had spoken of with such respect? And why did the very mention of his name seem to carry so much weight?

And the final question...could he stop Aizen?

Determined to find answers, Ichigo's first stop was Captain Jushiro Ukitake's quarters. Despite the toll the recent battle had taken on him, Ukitake welcomed Ichigo with a warm, if somewhat weary, smile. Yet, behind that smile, Ichigo could sense a deeper sadness, as if the memories Ukitake was about to share were burdensome.

"Ichigo! Please come in!" Jushiro spoke warmly.

"Ukitake-San," Ichigo began, his voice hesitant but resolute, "I need to know something. During the fight, Aizen mentioned someone—Uchiha Itachi. Who was he? Why does everyone talk about him like he's some kind of legend?"

Ukitake's expression softened, but there was a profound sadness in his eyes, a shadow of the past. "Itachi… That name brings back many memories. Well, to put it bluntly, he was… unlike anyone else in the Seireitei."

Ichigo's curiosity deepened. "Was he really that powerful? Stronger than Aizen?"

Ukitake nodded slowly, his gaze distant. "Powerful, yes. But his strength wasn't what made him who he was. Itachi was a peerless genius, unmatched even among prodigies. There have been many gifted Shinigami over the centuries—captains like Hitsugaya Toshiro, who reached captaincy at a remarkably young age. But even Toshiro, with all his talent, paled in comparison to Itachi."

Ichigo frowned, trying to grasp the magnitude of what Ukitake was saying. "Damn, he was like a super-genius or something?"

Ukitake smiled faintly. "You could say that. Itachi's mind was as sharp as his blade, and his understanding of the world went far beyond the typical concerns of most Shinigami. But what truly set him apart was his heart. He had a kindness, a warmth, that was rare in someone of his strength. Yet, there was also an air of mystery about him. Even those of us who knew him well never fully understood him. Which is probably why he and Aizen got along so well."

Ichigo absorbed Ukitake's words, a mix of admiration and confusion swirling in his mind. "But what about Aizen? He talked about Itachi like he was the only person he ever respected. What was their relationship?"

Ukitake's expression grew more reflective. "They were students together at the Shinigami Academy. Both were prodigies, but their paths diverged over time. I didn't know what Aizen wanted before. But now it seems he seeks power and control, a means to reshape the world in his image. But Itachi… he was different. He wasn't interested in power or glory. He was always searching for something more—something deeper."

Before Ichigo could press further, the door to Ukitake's quarters slid open, and Shunsui Kyoraku stepped inside with a bottle of sake. His usual laid-back demeanor was absent, replaced by an uncharacteristic seriousness.

"Talking about Itachi, huh?" Shunsui remarked, his tone carrying an unusual weight.

Ichigo nodded, his curiosity only growing. "Yeah… I'm trying to figure out who he really was."

Shunsui leaned against the doorframe, his eyes distant. "Itachi was a hard man to figure out, even as a little kid. There was always this sense that he was operating on a different level, like he saw things the rest of us couldn't. He didn't care about status or titles. He was focused on something beyond all that."

Jushiro added. "I remember when I first saw him when he was a kid. He was only four or five, but it was already as if he had the weight of the world on his shoulders."

"Yeah, that first look when I saw him. Can never forget that." Shunsui sighed and looked at Ichigo. "You know though...in a way, you remind me of him."

"I do?" Ichigo raised an eyebrow

"He was much wiser of course." Shunsui smirked. "But he always fought for what he believed in, even if he had to fight all of Soul Society."

"And he did multiple times." Jushiro reminded him.

Ichigo could see the deep respect in both captains' eyes, but there was also an undeniable air of mystery surrounding the man they were describing. It was clear that Itachi wasn't just another Shinigami—he was something far more complex.

Ichigo's next stop was the hospital wing, where Captain Byakuya Kuchiki was recovering from his injuries. The room was dimly lit, and Byakuya lay in bed, his expression as stoic as ever. Ichigo hesitated, unsure how to approach the topic, but eventually, he just came out with it.

"Ichigo Kurosaki." Byakuya spoke. "What do you want?"

"Hey Byakuya… I've been hearing a lot about this Uchiha Itachi. What was he like?"

Byakuya's eyes wideed slightly, and for a moment, he said nothing. Then, he replied, "Itachi was on a completely different plane compared to the rest of us. His nobility wasn't just in his lineage or his skill as a warrior—it was in the way he carried himself, the choices he made. He didn't care for the petty concerns that consumed most of the Soul Society."

Ichigo was taken aback by the intensity in Byakuya's voice. "So, he was like a mentor to you?"

Byakuya's gaze softened slightly, though his tone remained firm. "More than a mentor. He was like the older brother I never had. He saved my life multiple times, when I was too young and reckless to understand the dangers I was facing. But what I admired most wasn't just his strength—it was his kindness. He had a warmth, a sense of understanding, that was rare among Shinigami."

Ichigo's curiosity only deepened. "It sounds like he was an amazing person."

Byakuya's expression darkened, a hint of regret flashing in his eyes. "He was. But he wouldn't have approved of some of the choices I've made… especially when it came to Rukia. Itachi believed in upholding the law, but he also believed in compassion. He would have understood why I did what I did, but I doubt he would have agreed with it."

The room fell silent, the weight of Byakuya's words lingering in the air. Ichigo could feel the depth of the connection Byakuya had with Itachi, and it only made the mystery surrounding this enigmatic figure even more profound.

Leaving the hospital wing, Ichigo made his way to the quarters of Captain Unohana. If anyone could shed more light on Itachi, it would be her. Unohana was seated in her usual serene manner, her presence as calming as ever.

"Kurosaki-san" Unohana spoke as she saw him approach her. "I hope you are not straining yourself?"

"Nah, I'm fine." Ichigo spoke. "But Unohana-san," Ichigo began, his voice filled with a mixture of curiosity and uncertainty, "I've been hearing a lot about Uchiha Itachi. Can you tell me more about him?"

Unohana's gentle smile faded into something more contemplative. "My my. I haven't heard that name in a while...Itachi was… different from the others. There was a kindness in him, a strength of heart that matched his unparalleled genius. From the moment he entered the academy, it was clear he was destined for greatness. But there was always an air of mystery about him—a sense that he carried burdens that no one else could see."

Ichigo listened intently, the pieces of the puzzle slowly coming together. "Everyone keeps saying he was a genius, but it sounds like there was more to him than that."

Unohana nodded, her gaze distant as if recalling memories from long ago. "Yes, he was a genius, but not just in terms of power or intellect. Itachi had a way of seeing through the complexities of our world, of understanding people in a way that few could. If he had remained in the Seireitei, there's no doubt in my mind that he would have been the favored successor to Captain-Commander Yamamoto."

Ichigo was struck by the weight of her words. "He could've been the Head Captain? But he left… Why?"

Unohana's expression grew somber, and she sighed softly. "Itachi chose to leave for reasons that were both personal and profound. After the last Great Civil War, a conflict that nearly tore Soul Society apart, Itachi realized that the wounds inflicted by that war hadn't fully healed. He believed there were deeper issues within our society that needed to be addressed—corruption, fear, mistrust. And he knew that his presence alone could exacerbate those issues."

Ichigo's brow furrowed in confusion. "What do you mean?"

Unohana's voice lowered, taking on a more serious tone. "Itachi was greatly admired by the Gotei 13, but the Central 46… they feared him. They saw his power and his influence as a threat. They worried that if he remained, his very existence could become a catalyst for more chaos. Itachi understood this, and rather than risk plunging Soul Society into further turmoil, he chose to leave."

Ichigo was quiet for a bit. "Itachi, when he attended the Soul Academy, revolutionized nearly every aspect of Shinigami arts when he was there. But after Itachi left, the Central 46 painstakingly removed all the changes that Itachi made all because they feared him that much. Looking back, I am not surprised that Aizen massacred the Central 46. Aizen must have hated them for trying to erase Itachi's existence."

The ryokai was silent, his mind racing with everything he had learned. The more he heard about Itachi, the more he realized that this man was unlike anyone he had ever encountered. He wasn't just a hero or a warrior—he was a figure shrouded in mystery, a man who had walked a path few could understand.

Finally, Ichigo spoke, his voice tinged with a hint of desperation. "Do you think… do you think I could find him? Maybe he could help us stop Aizen."

Unohana's smile returned, but it was tinged with sadness. "Itachi isn't someone who can be found or recruited, Ichigo. He's not a soldier to be commanded, nor is he a weapon to be wielded. That's what made him so feared by the Central 46—they couldn't control him, and that terrified them."

Ichigo felt a chill run down his spine as Unohana's words sank in. Itachi wasn't just a hero or a legend—he was something far more enigmatic, a figure who had left an indelible mark on the history of Soul Society.

As Ichigo prepared to leave, Unohana added. "There's something else you should know, Ichigo," she said, his voice carrying a weight of solemnity. "Itachi is known by many names in the shadows of Soul Society. Some call him the 'Lord of the Empty Throne,' a title that speaks to the power vacuum he left behind. Others refer to him as the 'Lord of the Seventh Kingdom,' a reference to… well, that's a story for another time."

Ichigo's eyes widened in surprise. "The Lord of the Empty Throne? The Lord of the Seventh Kingdom? What does that even mean?"

Unohana smiled faintly, a glint of mystery in her eyes. "You'll find out in due time, Ichigo. But for now, just know that Itachi was a man unlike any other—a peerless genius, a kind heart, and a mystery that may never be fully unraveled. Actually Urahara-san and Yoruichi-san might know more."

After the dust had settled and the battle-weary Shinigami had returned to their posts, Ichigo, Orihime, Chad, and Uryu found themselves back in the familiar streets of Karakura Town, thanks to Urahara.

A few days later, after they all recovered, they decided to visit Urahara again. The mysteries surrounding Uchiha Itachi continued to gnaw at Ichigo's thoughts. He needed answers, and there was one man in the world who seemed to have them in the Living World—Urahara Kisuke.

The group made their way to the Urahara Shop, the unassuming storefront hiding the secrets and knowledge of the former captain. The shop's dim lighting and cluttered interior contrasted with the bright and bustling world outside, adding to the aura of mystery that always seemed to surround Urahara.

Kisuke greeted them with his usual nonchalant grin, his hat tipped down just enough to obscure his eyes. "Well, well, if it isn't my favorite group of visitors! To what do I owe the pleasure?"

Ichigo didn't waste any time. "Urahara-san, I want to know about Uchiha Itachi."

At the mention of the name, Kisuke's smile faltered for just a moment, replaced by a more thoughtful expression. He motioned for the group to sit down on the worn tatami mats in the back room, away from prying eyes and ears.

"Itachi, huh?" Kisuke said, plopping down on the ground. "Where did you hear that name?"

Ichigo looked around at his friends, each of them sharing the same curiosity, before turning back to Kisuke. "I've heard a lot about him, but no one seems to know the full story. Who was he? And what was his connection to you and Aizen?"

Kisuke's expression grew serious, his usual playful demeanor fading. "Itachi was… well, calling him a genius would be an understatement. He was the kind of person who could see through the fabric of reality itself, the kind of person who could take something as complex as the Hogyoku and understand it at a level that Aizen and I could only dream of."

Uryu's eyes widened in surprise. "You're saying that the work Aizen's Hogyoku… it was because of him?"

Kisuke nodded. "His theories to be exact. Aizen and I had our theories, our experiments, but it was Itachi's theories on spiritual energy, kido, and hollows who helped us piece everything together. Without his work, neither myself or Aizen wouldn't have been able to turn the Hogyoku into what it became. His understanding of spiritual energy and the nature of the soul was beyond anything we could've achieved on our own."

Ichigo frowned, his thoughts racing. "So, he was helping you and Aizen? Why? What was in it for him?"

Kisuke chuckled softly, though there was no humor in his voice. "It wasn't about power or ambition for Itachi. He had a deeper understanding of the world—a desire to protect and preserve balance, even if it meant making difficult decisions. He wasn't like Aizen, who really just wants to dominate and reshape the world. Itachi was more concerned with ensuring that the world remained intact, even if it meant working in the shadows."

Orihime, who had been quietly listening, spoke up. "Urahara-san, you mentioned Itachi was a genius… but what about his heart? Everyone keeps talking about how kind he was."

Kisuke's expression softened. "Itachi's kindness was perhaps his greatest strength. He had a way of understanding people, of seeing through their pain and struggles. But he was also burdened by that kindness—he carried the weight of the world on his shoulders, always trying to do what was right, even if it cost him personally."

Chad, who had been silent until now, asked the question that had been on everyone's mind. "What about Yoruichi-san? Does she know hm too?"

Kisuke's eyes flicked toward the door, as if expecting Yoruichi to walk in at any moment. "Yoruichi and Itachi were more than just close. They were childhood friends, yes, but their bond went much deeper than that. They understood each other in a way that no one else could."

Ichigo could sense there was more to the story. "And what happened between them?"

Kisuke hesitated, as if weighing how much he should reveal. "That's something you should ask Yoruichi yourself."

Ichigo nodded, his mind made up. After a brief exchange of farewells, he and his friends left Urahara's shop, the questions still swirling in his mind. The night was cool, the sky clear, and the moon hung full and bright above them. Ichigo found Yoruichi sitting alone on a rooftop, her golden eyes reflecting the moonlight.

"Yoruichi," Ichigo began, but Yoruichi cut him off.

"I heard you asking Kisuke about Itachi." Yoruichi answered even without turning to him.

"Yeah, and I heard that you two were childhood friends. I've been hearing a lot about Itachi… and I wanted to ask you about him...if that was okay."

Yoruichi didn't look at him at first, her gaze fixed on the moon. When she did, there was a sadness in her eyes, a deep, unspoken pain. "Itachi… He was more than just a friend to me. We grew up together, trained together, and… well, we were more than just childhood friends."

Ichigo could hear the unspoken emotion in her voice, the way she lingered on the words. "More than friends…?"

Yoruichi finally turned to face him, a bittersweet smile on her lips. "We were… everything to each other, once."

"Like boyfriend and girlfriend?" Ichigo blurted.

"More like soulmates. At one point, he and I thought about eloping together." Yoruichi sighed.

"Wha-" Ichigo gasped. "Man...you two were that close?"

"Closer than that. But Itachi was always destined for something greater, something beyond just being by my side. He had responsibilities, burdens that no one else could carry. And in the end, he chose a path that took him away from me… from all of us."

Ichigo could feel the weight of her words, the sadness that lingered beneath the surface. "You still care about him, don't you?"

Yoruichi's smile faded, replaced by a look of deep sorrow. "I'll always care about him. But Itachi… he wasn't someone who could be tied down. He was a force of nature, a man who walked his own path, even if it meant walking alone."

The silence that followed was heavy, the unspoken emotions between them hanging in the air. Ichigo could sense that there was more to the story, more to Yoruichi's feelings for Itachi, but he knew better than to press further. Some wounds were too deep to be healed by words alone.

As Ichigo left the rooftop, Yoruichi remained behind, her gaze returning to the full moon. She sighed softly, memories of the past washing over her like the gentle breeze. Her thoughts drifted back to the first time she met Itachi—a time when the world was simpler, and the burdens they would one day carry were still far in the future.

The memory was vivid, as if it had happened only yesterday. A young Itachi, his eyes filled with both innocence and a quiet determination, had stood before her, his hand outstretched in friendship. From that moment on, their lives had been intertwined, bound by a connection that was deeper than mere words could express.

But time had a way of changing things, of pulling people apart, no matter how strong their bond. And now, as Yoruichi looked up at the moon, she couldn't help but wonder where Itachi was—what path he was walking, and whether he was as lonely as she felt at that moment.

"Wherever you are, Itachi… I hope you've found what you were looking for," she whispered to the night, her words carried away on the wind.

And with that, Yoruichi turned away from the moonlit sky, the shadows of the past still lingering in her heart.

Meanwhile, a figure was looking out the Soul Society with a small nine-tailed animal on his shoulder.

"So...that's your answer, Aizen." He spoke.

The next chapter will start with Itachi's start in the Soul Society!