Multiversal Manifestation System

The younger audience - the ones who had watched tonight's episode, the ones who revered the Flame Hashira, exploded with excitement. Their voices mixed with the virtual world, hopping and cheering as if they couldn't contain their energy.

"It's him! He's real! Rengoku's real!"

"No way! He's the real Rengoku! This is insane!"

 "I thought it was just a character... but he's here! The flame's alive! He's RENGOKU!"

For them, it wasn't just a character in a fictional show anymore. The anime had come to life, and standing before them was none other than the Flame Hashira himself.

They had seen him in the anime, read about him, but never imagined he could exist outside of fiction. To them, it was the real Rengoku, and it was as if the world of Demon Slayer had crossed into their reality.

Meanwhile, the older warriors, who didn't have much interest in anime, never watched Demon Slayer, and weren't as familiar with Rengoku, so they just stood there in confusion.

They had no idea who the mysterious figure was or what his words meant. But they could feel the intensity in the air, and the impact this was having on the crowd.

"Who... who was that guy?"

"What the hell just happened? That guy wasn't just fighting… He was like the embodiment of flame! How is someone with that level of control over mana in the lower brackets of the colosseum?"

"Was that some kind of know actor? I don't get it…"

But among them, there was Otto, the warrior Wang Zi had defeated in his earlier fights. He had been quietly watching from the sidelines after his own loss to Wang Zi, initially chalking up his defeat to the fact that Wang Zi's moves felt strangely familiar. But now, seeing this, he realized something even deeper: the man he had lost to was no ordinary fighter.

Otto was muttering to himself, "No… there's no way… that was no coincidence. I've seen those moves before. The breath styles, the fire. This isn't some gimmick. It's Flame Breathing - it's Rengoku. It has to be."

Otto's eyes widened in disbelief as the crowd's reaction continued to ripple out in waves. His mind raced, piecing together the events he'd witnessed. The flame, the moves, the words;

He now understood that Wang Zi wasn't just a skilled fighter; he had somehow channeled Rengoku's spirit into the Colosseum, bringing the Hashira's techniques to life in a way that no one had ever thought possible.

"I need to find this guy… I need to know more!"

Elsewhere, in his luxurious room, Alexander sat at his desk, staring at the now empty arena.

His fingers had clenched around his chair so hard, that it was now completely busted. He had been watching Wang Zi's battle with utmost focus, but the final reveal, the words Wang Zi spoke, the flame, the way he acted...

"How? Could that person have been the inspiration for Rengoku in the anime? So 'MMS' just copied his moves into the anime? Or is it something else? How can he fight while breathing mana? That's something that was only recently learned by humans, and the techniques are still rough and being developed, even at Earth-102... How? Who is he?!"

The Nedeir family, his powerful lineage, had always been involved in matters of influence, information, and secrets. The knowledge they had access to was in no way comparable to the normal citizen.

And now, Alexander was intent on finding out exactly who this mysterious Flame Fighter was, what secrets he was hiding. He was especially interested in the breathing styles. If they could really be used...

"I need to know everything about this guy. His identity, where he came from, how he's doing this… I'll have the entire Nedeir family track him down if I need to." Alexander said.

"Sebastian!"

His butler, a middle-aged man with a stoic expression, appeared at the other end of the room.

Alexander's eyes gleamed and his voice was heavy with determination. "Find out who that person is. I don't care what it takes. Use every contact, every influence. This is something big. You should understand what the way he was breathing means. Do whatever you can. The Nedeir family's influence should be more than enough."

The butler's eyes briefly flickered with surprise, but he quickly nodded, understanding the weight of his young master's request.

"Young master, forgive my affront, but you left the family and cut off all contact for a reason... Do you want to re-connect with the main family's network? Your uncle is still looking for you."

Alexander paused for a second. "You're right... Then use our power here to find out what you can. If its not enough we'll see what we can do after."

"Of course young master. Then I'll be going."

Unfortunately, Alexander's efforts were useless. With the system shielding everything about Wang Zi, he was bound for disappointment.

After days of fruitless searching in the virtual world, Alexander was starting to lose patience. Despite using his connections through the virtual world, nothing came up. There was no trace of Wang Zi's true identity.

He felt his frustration mount as his resources seemed to fail him. Even the most obscure digital footprints, the tiniest slip-ups - nothing.

Wang Zi had seemingly appeared out of nowhere, and Alexander's determination to uncover the mystery of the Flame Fighter only grew with every passing hour.

"It's like he's a ghost… Why can't I find anything on him? How is this possible?" Alexander frustratingly thought.

Standing beside him, his loyal butler watched in silence. After a moment of contemplation, the butler spoke up with a calm, almost rehearsed tone.

"Young master, perhaps its time we turn to the family. You've been outside for long enough."

Alexander paused, and then sighed deeply. His mind raced with the implications of this approach. To reach outside meant stepping into realms that were more dangerous, more murky areas he hadn't wanted to visit for a while.

"I don't want to involve my father… He'll just use this as an excuse to force me into more training. I've had enough of being told I'm not as talented as my brothers." Alexander complained.

"I'm not suggesting we involve your father, young master. There are others who could help. Your uncle… he may know something, or at least he might be able to point us in the right direction. He has always been an ally to you." Sebastian calmly stated.

The thought of his uncle made Alexander hesitate. His uncle, a highly respected figure in the Nedeir family, had always been supportive of him.

Unlike his father, who believed in the rigorous path of training and power, his uncle had always shown understanding and guidance, even though he seemed cold on the outside. The idea of connecting with him was tempting. But there was a catch.

"Fine. But only if he agrees to watch this video first. If he asks me to train again, I'm out. I've had enough of training my entire life just to be compared to my brothers."

"Understood, sir. I'll arrange the meeting."

A short time later, the virtual world was buzzing with activity as Alexander finally secured the meeting with his uncle.

He had the holographic conference room set up, his uncle's avatar materializing with his characteristic stern expression. The elder Nedeir was a formidable man, known for his coldness in battle and calm, analytical mind, but Alexander knew there was a softness to him, a quiet wisdom that his father lacked.

"Alexander, my nephew… Sebastian has told me you've encountered some problems. Did you finally decide to come back to us? Tell your uncle what the problem is."

Unlike Alexander, his uncle - Ray Nedeir - although also dressed in a tight fitting suit, had scars on his face and hands, with a buzzcut. You could tell he was a man who fought - a man of action.

Alexander nodded, not wasting any time.

"I need your help, Uncle. There's someone, someone in the virtual world. I need to know who they are."

With a wave of his hand, Alexander had a screen with the video of Wang Zi's final fight in the Colosseum, where the Ninth Form: Rengoku had lit up the battlefield. His uncle watched quietly, his expression unreadable as the scenes played out in front of him. Alexander's heart pounded as he waited for any kind of reaction.

When the fight concluded, his uncle remained silent for a few moments, analyzing the video, taking in every detail. Finally, he spoke.

"I've seen many fights, Alexander… at all levels. But this is interesting."

Alexander just grinned at him, "You saw it, right?"

"Hmm. Interesting, yes. But you should understand that at this level, this kind of spectacle isn't exactly rare. Although controlling mana like that might be amazing in a backward planet, its nothing new for us." Ray Nereid kept tapping the table.

Alexander's excitement faltered a little as he realized his uncle hadn't seen what he wanted to show him.

"But, what caught my attention…"

Alexander leaned forward, waiting. His uncle's next words sent a chill down his spine.

"What interests me is the way he fought. Specifically, the way he handled his energy. I've seen countless warriors fight, but this Rengoku, he fought as if he was drawing from an endless source of power. Mana breathing while fighting...

You see, it's not just his sword skills or his technique that's impressive. It's the way he replenishes his energy while fighting. That's not typical for someone at his level. Most warriors can't keep up a fight like that without exhausting themselves. But this person…"

He's not just using mana in the conventional way. He's breathing it in while he fights, like a breathing technique - but instead of cultivation, its specialized for fighting. It's something I've only ever seen in… select ancient martial arts books."

"You should understand that only we of the Nedeir just recently came upon a breathing technique that can be used while fighting, and its efficiently still doesn't make it a viable option. Elemental controllers can use ambient mana and mana stones to offset this to some degree, but warrior-type classes aren't as lucky, their mana is limited, and their conversion with mana stones isn't as good."

Ray Nedeir then paused, and turned to face Alexander with an intense look in his eyes.

"I need you to find out everything you can about him. Where did he come from? How did he learn to breathe mana like that?"

Alexander's heart skipped a beat. This was the first time his uncle had ever spoken with such urgency.

"I… I've been trying to find him, Uncle. But the network can't track him. His identity is practically a ghost."

"Then you must look outside the virtual world. Find him. I don't care how. But don't let this slip through your fingers."

"Understood. I'll get to the bottom of this. No matter what.

But uncle... I've seen this person somewhere else."

Ray Nedeir suddenly paused. "Hmm? Speak then."

"Uncle, I've realized something. The techniques that person uses, I've seen them before. He's impersonating a character from an anime series. The style, the form… it's all from a show I watched just yesterday."

Uncle Ray gave a single nod, gesturing for Alexander to continue.

"This anime is called Demon Slayer. It's about these warriors who use specialized breathing techniques to fight demons. Each technique is tied to an elemental power, and it's all grounded in some kind of ancient martial art. The best part? The characters can actually breathe in a way that channels some kind of power into their attacks."

His uncle's eyes widened slightly at that. He leaned forward, clearly intrigued.

"So… this anime shows people breathing mana?" Ray questioned.

"Exactly. And they do it without blowing themselves up. The most famous technique is Sun Breathing, and while I can't say for sure that it's a perfect simulation of what this person is doing, the connection is undeniable."

Without wasting another moment, Alexander began showing his uncle the breathing styles featured in the anime. He started with Water Breathing, showcasing how it flowed with elegance, creating rippling movements that could slice through stone with a single strike. Then he moved on to Thunder Breathing, emphasizing its explosive power and the speed that accompanied it.

As the videos of the different breathing techniques played on the screen, his uncle remained quiet at first.

The Water Breathing, with its serene fluidity, seemed like a neat trick, but the Thunder Breathing - that was something else. As the technique moved through the virtual imagery, with its lightning-fast slashes and the raw force behind each blow, his uncle's expression began to shift.

"This… this isn't just virtual. The breathing… the way it taps into the body's core, it feels real. If this is true, if this anime's techniques are a reflection of something more, if we can use them in real life..."

He sat back, rubbing his chin thoughtfully, clearly processing what he had just seen. The weight of this discovery was not lost on him.

"What you're telling me, Alexander, is that these techniques might actually be usable in reality?"

"That's what I think uncle Ray. That's why I want to find out more about this Rengoku. If he really is using mana breathing in a way that nobody else can… then he's not just some random fighter."

For the first time in the conversation, the uncle's expression grew serious. His eyes, usually calm and calculating, now held a fierce determination that sent a chill through Alexander.

He leaned forward and said to Alexander, "If this Rengoku person has mastered mana breathing to this extent, we cannot let this opportunity slip. This is beyond just a game or an entertainment show. A method of drawing mana into the body and channeling it while fighting - its a method our current human race hasn't mastered yet. We need it."

"I need you to make this happen, Alexander. Use whatever connections you have. I'll have the family back you up. This is more than just a new fighter. If we can gain his trust, learn his methods… it could change the way we understand mana. It could give us an edge no one else has."

"Just remember not to get on his bad side - try to make friends, even purchase this method off him. There's no benefits to being his enemy."

"Yes uncle! I'll do my best!" Alexander just nodded.

As the meeting ended and the screen flickered out, Alexander was left with a sense of foreboding. His uncle's words were serious. 

The search for Wang Zi was no longer just a curiosity.

No, it had become a mission.