Chapter 1: Shinobi World
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So, I Just fixed many things; I hope you like them.
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At some place,
in the endless Void,
a glowing ball flew with vigor.
This glowing orb is the soul of a young man who recently died and fled from the grim reaper, Azrael.
"I finally ran away, Fu*k you God, he just wanted to throw me to hell just because he didn't believe in God, I swear if I am a good person you know!"
This soul is named Frey Lynn, a 17-year-old high school student with an ordinary life without any extraordinary events in his life. The only things that color his life are a bunch of anime, manga, and novels.
Back to some time ago
When Azrael captured Frey's soul after he died, Azrael stored his soul in the soul bag.
Frey, who has resigned himself and his fate in Azrael's grasp, suddenly heard a series of mysterious voices from within his mind.
[Requirements met]
[Installing Akashic System]
[1%..6%..30%..70%..90%..100%]
[Akashic System Online]
[Detect the condition of the host!]
[Subject: Azrael detected!]
[Running Program '1']
[Backup power accessed]
Suddenly, a dazzling explosion occurred inside the soul bag, causing Azrael's soul bag to explode and scatter all the souls he had collected. The souls that sensed they had escaped from the soul bag immediately scattered to flee in all directions. Azrael, who saw it, immediately let out a furious roar and picked up her scythe, slashing at the fleeing soul.
Unfortunately for the weak souls with nothing to do but float away, Azrael could easily catch them all back.
After gathering all the souls in his hand, Azrael, who found a lost soul, roared in anger in the Void, for the first time since he was created and assigned to pick up the souls of the dead, a soul escaped from Azrael, which was a disgrace to him.
At the other end of the place opposite Azrael, Frey's soul appeared.
Back to the present
"Wow is this the legendary system that can give anything for me to be the strongest in the world?" Frey was amazed before a flat mechanical voice answered.
[Akashic System was created by @$$@%@% so that the host can live a happy life as the host wants without being bound by fate]
"Sorry System, can you repeat who created the System!? And what does it mean not to be bound by fate?"
[The host does not have sufficient authority to know the pertinent information]
Frey was familiar with these kinds of things, so he stopped asking because it was pointless. So Frey just threw away the pleasantries and moved on to the next session.
"I will call you Akashi from now, so can you tell me the features available in the system."
[The System has several features, including Shop, Quest, Summon, Storage, and Array teleportation between worlds]
[Because the host is in the soul form, the System will allow the host to be reborn in the chosen world, freely choose the appearance, choose two complementary talents, and bloodline 'Assimilator']
"Hoo, so I'm going to be a multiverse explorer, sounds good, I don't want to be stuck in one world forever."
Frey more or less understood the function of the System features other than the teleportation array, but Frey could ask that later. He read from the information that the 'assimilator' bloodline was a bloodline that could absorb the characteristics and talents of other lineages, a highly overpowered origin. After thinking for a while, Frey decided.
"I want to be born in the shinobi world considering it's the world I understand the most, For the first talent I want 'Unlimited Blade Works' from Fate/Stay Night, and also access to the throne of heroes, For my looks I want 'Shosuke Komi' performance from the manga Komi-san can't communicate."
[Settings saved]
[System will awaken the host's talent and memory once the host reaches the age of 6]
[Warning: Due to the $#@%$@ error when creating the System, there will be a storyline difference from the actual work]
Frey gasped. "Hey system what does that mean!"
[Insufficient authority]
Frey found himself wanting to swear at this moment, but before he did it
[Continuing program '1']
With a white flash that exploded in the Void, Frey's soul vanished as Frey transported it to his new world.
…
In the hidden leaf village of a residence located on the outskirts of Konoha, a boy with jet black hair was walking with a girl with long bright red hair towards the ninja academy in the morning side by side.
This boy is Shosuke Uzumaki, aka Frey Lynn, who has been reincarnated into the world of shinobi. Currently, Shosuke still has not regained his memory, while next to him is Kushina Uzumaki. They are both remnants of the Uzumaki clan that was massacred during the Second Shinobi War.
Because of Konoha's relationship with the Uzumaki clan, they both earn support from the 3rd Hokage to study at the ninja academy and live in Konoha.
"Ne..ne...Shosuke, isn't your sixth birthday next month? How about we celebrate it, I will invite Minato to celebrate as well, after all, you are my little brother," said 9-year-old Kushina cheerfully
Currently, Kushina doesn't look like a tomboy when she is with Shosuke, who Shosuke considers Kushina's younger brother, even though they are not relatives other than clan relations.
Shosuke, who was almost six years old, looked at Kushina innocently.
"I heard from my classmate, Kushina's nee-chan doesn't have any friends because you gets angry and beats anyone who gets close to you?"
Kushina brushed it off and said proudly, "Don't believe such gossip, I hit them as a test whether they are worthy enough to be friends with your beautiful sister Kushina."
"Then...Brother Minato graduated?"
Kushina nodded casually, then gave a thumbs up at Shosuke. "He passed"
"Does that mean Kushina nee-chan will marry Big Brother Minato and leave me alone?" Shosuke said with his small round eyes as if it was the truth.
Kushina, who saw this, immediately panicked and carried Shosuke on her shoulder.
"Who said I would leave you? We are just friends."
"Uncle Jiraiya told me," replied Shosuke, who was carried while hugging Kushina's head.
"Don't listen to that perverted uncle, he will pollute your pure mind Shosuke."
Shosuke just nodded silently then said.
"Then I will marry Kushina's nee-chan when I grow up, I will not give my nee-chan to anyone, not even Minato's nii-san," He said in his childish voice.
Kushina, who heard that was silent and then blushed
She knew this little brother who looked like a girl at a young age would become a very handsome man in the end, and Kushina also had no problem if she wanted to marry Shosuke because they were not related by other than clan names.
Kushina raised one hand and stroked Shosuke, who was on her shoulder, then said, "Then you have to grow up soon or your sister will leave you first."
Shosuke just nodded, laughing as he hugged Kushina tighter, as they didn't notice someone in a ninja outfit and animal mask watching the two of them the whole time from the shadow.
...
CREATORS' THOUGHTS 
Hero_Of_Charity
Hero_Of_Charity I just moved it to #FanFic Section
Creation is hard, cheer me up!
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