Prologue

17th April, 20XX year;

It was the day where everything changed for Raiga because of a Mighty God. On that day, a hundred humans from all over the world got disappeared randomly and being pulled into a strange fantasy world, where there are Beasts, Demons, Elves, Human Kings, etc… and everyone received a Naruto system and received a blessing of chakra and a few other random abilities.

All the hundred humans were given a common mission, to save the world of Isora from the Demons and Dark forces. After 5 years of hard work, the remaining 38 users, who are alive, received an unusual Quest from their respective system.

"The Mighty God was impressed by Naruto anime and its popularity. So, he created the world of Naruto based on the Anime. Now he wants to give an opportunity to one person. But there are still 38 system users left in this world.

So, kill all the other users to go to transmigrate into the world of Naruto. You've been given a tracker. It will show you the position of other system users. You can either choose to accept or reject. Dying at the hands of other system users, rejecting the Quest or failing on completing the quest in one month will be deemed as a Quest failure and you'll return to your native world, Earth back to the time you disappeared."

Three weeks later, at a battleground where there are tens of thousands of corpses lying around everywhere along with several beasts like dragons, griffins, rhinos, tiger, lion, Gorilla, etc… Raiga coughed blood as his heart was pierced with a spear made of Ice. He roared in anger as tears began to fell from his eyes, "why? Why did you pull the entire world into our personal battle?"

In front of him, there's a person drenched in blood from top to bottom, who looked at him coldly and replied, "if you want to blame someone, blame that God for playing a prank on us. I have sweated my blood to defeat the demons and when I finally decided to live in peace with my loved one, this one quest shattered all my dreams. God cannot take back his promise. You are the only one left. After killing you, I will go into the world of Naruto and destroy the so-called peace there. That'll be the revenge a human going to take on that mighty power."

Raiga shouted, "You are sick. I will not let you do this." And he began to form seals one by one. Snake>Boar>Ram>Rabbit>Dog>Rat>Bird>Horse>Snake and Clapped his hands.

"Fuinjutsu: Shiki Fujin- Sealing Jutsu: Reaper Death Seal"

As the Death God appeared behind Raiga and started pulling the soul out of his enemy, his enemy felt that and stabbed Raiga with his Ice sword, a number of times and then pierced his throat, so that, he can stop that jutsu but Raiga still was able to pull out the soul and died at the same time before sealing inside of his stomach.

Raiga's soul which was floating in a space filled with darkness suddenly got a notification.

*Ding* Congratulations, you completed the Quest. As your reward, you'll be transmigrated into the world of Naruto during the Kyuubi's incident. Since you've chosen to be a fuinjutsu user, you will transmigrate into the body of an unknown Uzumaki. While all of your memories stay intact, the knowledge of all of the jutsu, you gained till now, will be sealed for 15 years.

Since the God-given system cannot stay in the Naruto world, you get to choose your chakra nature and two of the jutsu you have in this life. In his mind, Raiga then saw a list of jutsu he learned along with his own creations, which are in grey. That means, he cannot choose even one of the sealing Jutsu that he painstakingly created in the past 5 years and would have to live with his knowledge over them getting sealed for the next 15 years.

"Ok, I choose Adamantine Sealing Chains and Flying Thunder God," as he spoke, they disappeared and replaced with basic natures, followed by System's voice.

"Choose one basic chakra nature."

Raiga thought for a while and replied, "I choose lightning nature."

*Ding* "Lightning Chakra nature, Adamantine Sealing Chains, and Flying Thunder God are selected. The mission of the System is over. System going to remove itself from your soul and return to the Almighty being. Good luck on your next adventure."

All of a sudden, Raiga felt a strong gravitational force in the pitch darkness and he was slowly sucked into something like a black hole.

As he opened his eyes, Raiga found himself possessing an unfamiliar body, sleeping. As he woke up, he realized he was in a small boat, floating on the water. Raiga then crawled to the edge of the boat and saw his reflection in the water. "Red hair, an Uzumaki. I guess God fulfilled his promise. I'm now in the world of Naruto."

Raiga screamed with joy before starting to feel hungry followed by receiving memories of the original body in his mind. "Oh! So, this boy also has the same name as me. Poor boy. He just wanted to stay as quiet as possible but became one of the victims of the Third Shinobi War. Ugh, I'm very hungry.

Dammit. I can't remember the hand seals of any jutsu and my knowledge of other jutsu too except Adamantine Chains and Flying God Thunder jutsu is also sealed as mentioned. Hmm, currently, I don't possess any knowledge of fire jutsu but I guess Lightning chakra will do."

Raiga then released Golden-colored chains from his hands and made it into a fishing net and then throw inside the sea. A while later, as he pulled out the fishing net, he found there are several small fishes caught inside it.

Just then, he put the closed fishing net back into the water and then, released lightning chakra through the chains until they were roasted before taking it out and throwing them on the boat. After eating full, he patted his belly, "well, no seasoning but at the very least, I'm not hungry anymore. Now, let's sail to the nearby Island, first. I can see something like a Mountain, far away from here." Golden chains once again released from him and Raiga controlled their shape into an oar and started to sail.