Naruto: Reincarnation with all existence system

As Ren took his last breath, he wished that he could live longer. Ren was the richest, and influential person on Earth. If Ren commanded all the countries would bow before him and do what he says. Ren used all possible ways to increase his lifespan, wasted vast amounts of money, whole towns researching ways to increase his lifespan. If Ren wouldn't care what he sacrificed if he could live longer.

Ren had done many betrayals and dirty practices to get to his position. Ren was ruthless and selfish, seeing nearly everything as a tool he can use to help him. Ren had gone through books and anime in the hope that it may contain ways to increase his life in them.

Even with all of Ren's power and fortune he couldn't escape the circle of life and would die eventually. Ren knew he could no longer fight his fate and would succumb to death. Ren wished he had been born in a world of anime and power could increase his lifespan. Then Ren had gone into complete darkness.

Ren saw nothingness, no gods, no light, no feeling, just the void. Ren didn't always have consciousness and from time to time he would remember who he was and his past life, wishing that he could live longer. After what felt like an eternity, Ren felt something different, he was still in a dark void, but now there was something different, some sort of warmth. Although Ren couldn't move around or see, he felt this warmth enjoyable and hoped it would last forever.

After spending time in this different void, Ren started to hear from beyond this void and saw a light begin to enlarge.

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On this day in the land of fire, it had not been a special day, just a normal day, but it was different.

In the sky, the moon had turned crimson, looking almost as though blood was dripping from it. The moon was ominous and everyone wondered why it happened, some thought of it as an omen of destruction and war. The ones in power knew there must be a reason behind it and didn't get overly worried about the moon, only a few who were planning to use the moon were worried.

Rato and Azuga had always been superstitious. Also, the baby had a strange feel to it, somewhat charming but also sinister, and gave their baby, who was born that day, to the local orphanage in fear of being harmed.

Ren wondered how he had been reborn with all his memories. Ren noticed that his surroundings seemed to be in ancient japan and thought he had gone back to the past and been reborn. Then Ren realized his parents had given him up, but he hadn't cared and just hoped he would be able to live without his parents.

Ren then saw an old woman take him in and begin to clean and dress him. Ren looked at the crimson moon, as he planned what to do next in this new world. He thought first he should understand this world and then plan.

'I should first get a basic understanding of this world and learn what I can do, then decide on the path I will take in this world.' - Thought Ren

As Ren was thinking of how to get more information on this world, he started to feel extremely drowsy.

'I am a newborn, after all, this will certainly be a hassle in the future' - Thought Ren

Whilst falling asleep in the embrace of the old woman from the orphanage, no one noticed Ren's eyes flash a dim crimson light.

Normally when a dream begins the person doesn't remember how they got where they are. The same thing had happened to Ren. He found himself in a dark place with a red shine to it, the only thing was a floating rock and a red moon in the sky. Ren was standing on the rock, and the moon was only a crescent and not full like the one outside his dream. As Ren was looking around he heard a voice coming from all around him.

『Initializing All Existence��

Then the darkness was spent away, and the crescent moon started to turn into a full moon, all the darkness was replaced with a crimson light. The moment the moon was full, the voice was heard again.

『Initializing Complete』

『All Existence Activated』

After the voice, Ren started to feel a giant headache and a sharp pain in his head. Ren felt as though something was fused with his soul, the pain felt very real almost like it wasn't a dream. Ren started to scream and almost passed out, the pain vanished as it had never been there in the first place.

Then memories started to flow into Ren's head, and he learned what All Existence was, it was a strange thing. As Ren read some novels in hope of them having a way to increase his lifespan, Ren knew how systems generally worked, but systems were normally a spiritual thing in people, Ren felt All Existence was something connected to reality, connected to his eyes.

Also, All Existence didn't make him do any annoying quests to get stronger or train proficiency to level up skills, although if Ren wanted it was possible, nothing was restricted in All Existence. There was only one law - conversion. It was converting existence from the real world and in return gave him a currency, which could give him anything.

The only thing prohibiting Ren from absorbing everything, in reality, was that absorption happens in two ways. One was by ingesting and everything not needed for survival, gets absorbed into his inner world, of course, the opposite was also possible, as it's exactly the same conversion. The second way was through Ren's eyes, but as he was a one-day-old baby he couldn't absorb even a single particle of dust.

It was not just spiritual energy or physical energy that decided how much he could absorb, but instead, a mix of the both (chakra), if one was too strong in only one it would still increase the absorption but only slightly because if ones spiritual energy is too big, but the body is too weak, the absorption wouldn't increase too much, as it would place a burden on the body, and it is the same the other way around.

As Ren was going through the memories given to him, he found a conversion list. The list was simple and contained things found in nature

<Materials>

1kg of dirt/stone = 1 Existence Point

<Flesh> (Human included)

1kg of normal animal flesh = 1 Existence Point

<Blood> (Human included)

1kg of normal animal blood = 1 Existence Point

<Soul> (Human only)

1 soul of normal animal =100 Existence Point

It also mentioned that things not on the list could give him Existence Points. Also, it told him that he could gain paths that would make him stronger in a certain stat and let him absorb more. After going through all the memories, the first thing Ren wondered how he could exchange points. Then Ren questioned why souls were worth so much and All Existence told him because there was only one soul in a human unlike how much blood and flesh a human/animal has.

Once Ren thought of it, a crimson light was in front of Ren and showed the number zero and the voice spoke again

『State your desire』

"Immortality." - immediately said, Ren

『Price depends on the host's current power, and as the host is only a one-day-old baby, the price is one hundred billion existence points, if host increases in power the price will drop』

Ren found getting immortality would be difficult, as it would take him tons of bodies, but Ren now knew immortality was possible with All Existence.

"Well like a normal system you should be able to show me my stats" - Said Ren

『Showing host's stats

Name: Ren Akimasa

Age: one day

Race: Human

Strength: 0.01

Agility: 0.01

Vitality: 0.01

Chakra: 0.01

Chakra Control: 0.01

-Affinities-

Water (Great)

-Kekkei Genkai-

None

-Techniques-

None

Average stat for an adult human is 1-2』

"Wait, Kekkei Genkai, I am in the naruto world?" - Ren said

『Because you will learn this very soon, the price is zero existence points.Yes, you are in the world of naruto.』

'Now that I know I am in the Naruto world and I can absorb things to get stronger, I can achieve immortality in this world' - Thought Ren

"How do I enter and leave this place" - Ren said

『To enter by will, you must use your eyes, and this will become available once you are at adult level in stats, currently you must sleep to enter all existence. For leaving you must wish to leave then you can.』

Right now, Ren knew how he could get stronger in this world, and now he just needed to figure out a way to secretly get existence points without anyone noticing. Then Ren decided to leave all existence .

『Leaving all existence.』