Then, slowly, I began to realize that all of this might be related to something called my Mangekyo Sharingan.
“I can move between different worlds…” I muttered softly, almost as if I was making sure that those words truly came from myself, rather than being a lingering echo from my previous experiences.
It was not just this world. There were many other layers of reality that felt like invisible doors, waiting to be touched, opened, or perhaps even forcibly opened by something within me that I still did not fully understand.
Alternative Naruto worlds, other worlds that had no direct connection at all, even worlds that only existed within fiction, such as Marvel, DC, or various comic worlds from Japan, Korea, and China.
All of this was not merely imagination or a fantasy created because my mind had received too much information in a short period of time.
They were real possibilities that I could actually access, even though until now, I still did not fully understand the limitations, rules, and true potential of this ability.
The more I thought about it, the more I felt that this ability was far greater than I had originally imagined.
The ability to travel between worlds was not simply a technique for traveling or ordinary movement from one place to another.
This was something that touched the very concept of existence itself, something that most living beings had never even considered before.
The thought of countless worlds that I could visit felt so vast that it was almost impossible to accept with ordinary logic.
There were too many possibilities unfolding before me: worlds with different histories, worlds with completely different power systems, worlds that might possess technology far beyond my understanding, or even worlds that had only ever been considered products of human imagination.
Until now, the concepts of parallel worlds, different timelines, and alternate realities were nothing more than things that existed within fictional stories.
Something that could only be read through novels, watched through movies, or discussed as fascinating theories that were never truly proven.
But now, everything had changed. Things that I could previously only read about or imagine had become part of the reality that existed right before me.
I truly possessed the ability to step out of one world and enter another world that might not even have any connection to the place I originally came from.
An ability that made the boundary between reality and fiction become incredibly thin. Worlds that I once could only see through a screen might now actually be places that I could visit with my own two feet.
However, one thing immediately became clear in my mind: I did not actually know which world I was currently in.
That realization caused the brief sense of calm that had appeared within me to slowly disappear. I let out a long sigh, trying to calm myself while staring at the sky that was becoming clearer above my head.
The sunlight felt warm against my skin, its rays passing through the gaps between the trees and creating moving shadows across the ground.
The sound of the wind flowing between the leaves sounded incredibly real, carrying the scent of soil and fresh air that made me even more aware that I was truly in some unknown place.
However, none of that was enough to erase the uncertainty that remained deeply rooted in my mind.
The beauty and tranquility of a place were never proof that the world itself was safe.
I did not know whether this world was a place I was already familiar with, a world that resembled something I had seen before, or perhaps an entirely new world that had absolutely no connection to the knowledge I carried from my previous life.
“If I am lucky and this world is a peaceful one… I can remain here,” I thought with a serious expression. “But if it is not… then I will have to leave again.”
The sentence sounded simple, but its meaning was far heavier than it appeared, because the decision to stay or leave this world was not merely a matter of personal choice.
Every world had its own risks and uncertainties. I had already understood that every reality possessed different rules, histories, and possibilities.
Even worlds that had the same names or characters as the ones I knew were not necessarily guaranteed to follow the memories I possessed.
A single small difference could create an entirely different history. One person's decision, one changed event, or one minor factor that had never happened before could alter the future of an entire world.
Because of that, I could not become overly confident based only on the knowledge I possessed. The memories from my previous life did provide an advantage, but they were only information, not an absolute guarantee.
I could not assume that everything would happen exactly as I had seen before.
Every world I visited could have different power systems, rules that I did not understand, or threats that far exceeded my expectations.
There was a possibility that I would enter a world with enemies far stronger than anything I had ever imagined, or perhaps a world that appeared simple but contained hidden dangers that could not be discovered just by looking at its surface.
Furthermore, the most important thing was that the ability I possessed also had limitations that could not be ignored.
One hundred days. That was the interval I had to endure every time I used the world-traveling ability of the Mangekyo Sharingan in my right eye.
That time limit was not merely a number. It was an absolute rule attached to this ability. It could not be shortened and could not be avoided, even if I was in the most desperate situation imaginable.
Even if I became trapped in a dangerous world, faced an enemy I could not defeat, or found myself in a situation that threatened my life, I would still have to wait until the ability became available again.
That fact made every decision far more important than before. I could not use Kuninotokotachi simply because of curiosity or merely because I wanted to see a new world that I had never known.
An ability like this indeed gave me almost limitless freedom, but precisely because of that, every step had to be considered carefully.
Every transition needed a clear reason, a definite purpose, and consideration of the risks that might occur.
Because one small mistake could leave me trapped in an unfamiliar place for an extremely long time. One hundred days was not a short period.
If I traveled to the wrong world, entered a place that was too dangerous, or made a decision without understanding my surroundings, then I would have to survive there until the ability became available again.
No matter how strong I became, there was still a possibility that I would encounter something beyond my ability to overcome.
Then I slowly looked at my hand. My fingers moved slightly as I felt the texture of my skin, confirming that everything that had happened was not merely a dream.
I could feel the presence of a different kind of power within my body, something that ordinary humans had never possessed before.
This power was not merely an additional ability that I could use whenever I needed an advantage in battle.
It was something that truly changed the possibilities of my life, something that changed the way I viewed the world, the future, and even my own existence.
With this power, worlds that I could previously only observe from afar could now become places that I could actually visit.
My right eye was called Kuninotokotachi. That name appeared naturally within my mind, like information that had been deeply embedded within my consciousness from the very beginning.
[Note: This is my other novel: As a Blacksmith in the World of Jujutsu Kaisen. As the White Spider-Man in Earth-76 with the Spider-Man System]