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For this series I had to wank Doomslayer to 608mph at the start along with, City level strength of the bat. Also I'm taking the statement of "The Slayer Is Immortal" into account, he will have instant regeneration immortality.
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"Sir there seems to be a portal opening around the ship, trying to enable Argent shield."
"ERROR FAILED"
"Sir, Brace for impact"
The Doomslayer grabbed onto the desk in front of him and patiently waited for the turbulence to end.
*BOOOOOOOOOOOOOOOOOOOOOM* An abrupt landing took place on an unknown planet.
"1...2...3... Starting up, Sir I am assessing the situation."
The Doomslayer was cleaning up the front desk bit by bit while waiting for Vega to report to him what's going on.
"Sir, it seems like we are on a planet almost like earth, with little technology, 8 bit computers and such. I searched the files of the storage computers, and it seems like this is a world with superhumans, who harness a special energy called Chakra, the strongest people are known to be able to casually destroy countries, with a threat of: CATASTROPHIC DANGER"
The Doomslayer was visibly shocked in seeing that people in this world were able to blow up countries with punches. He pointed to the word chakra on his screen, and the energy bay behind him.
"Sir Chakra seems to be intertwined with the air making it a natural source of energy for all living beings, not only could you power the ship with it, you could be strong enough to topple planets if you were to train in chakra. Your weapons could be enhanced significantly."
The Doomslayer for once felt a bit of happiness knowing that he could achieve true strength, enough for him to kill every demon in his way.
"Sir after checking all sources it seems that the way to gather chakra is to use handseals made by the people of this world to gather and unleash the power of chakra. But if you wait a little longer I can make weapon, and a natural gathering component from 'Chakra' "
Vega showed the handseals on the Doomslayer's monitor and very quickly The Doomslayer picked up the signs. Ever since he was with the Makyrs his mental capacity and knowledge ran deeper than any human, he was alike for eons anyway.
The DoomSlayer felt the chakra in the air and as he focused he felt power welling from deep inside him start to bubble to the surface.
"Sir it would be best if you worked out while focusing chakra, you can train your body that way."
The Doomslayer took off all his armor and started to do HEAVY training.
Since the Doomslayer had unlimited stamina, he could work out forever and not get tired. Unlike might guy which couldn't even do 100,000 pushups like a chump.
"Sir I have developed a way to transmit natural chakra to the ship, you need to make six rods out of the old praetor suit and use the argent elegy absorption technique, but instead of using argent energy use your own chakra to kickstart the energy. Then place it in the power station."
The Doomslayer went to the computer room and salvaged the old praetor suit.
He then put the components down and let Vega use the suit to make it for him.
He then went to install the rods. It only took about 12 minutes.
"Sir since this world is in its infancy I recommend setting up the Doom Fortress to mine the ores of this planet, you can make me a body to help you with the work"
The Doomslayer nodded and went to grab UAC technology from one of the spare rooms.
=Meanwhile in the leaf village=
"Lord Third, reporting from the intelligence agency we have seen a strange object shoot from space down onto out planet it has landed at edge of the country in-between us and the mist, strangely it seemed like a huge castle"
"Oh Ho" The Hokage was intrigued but not yet concerned
=Fortress Of Doom=
2 Days Later....
"Sir it seems this body of mine works well, this planets metals are of higher purity then earths."
The Doomslayer nodded
"Our current goal is to improve your armor and weapons for now, it would be best for you to go into the ripatorium and train using only your chakra while I modify your weapons."
The Doomslayer nodded and put on his old armor to wear in the meantime, He walked into the ripatorium and closed the door behind him, after this time the only one he could trust was himself and Vega.
2 Weeks Later...
"Sir I have finished upgrading all of the weapons, your armor, and the ship. Also I have got the ship back into space to stop people from trying to bother us."
The Doomslayer with a blood covered body walked out of the ripatorium dirtying both elevators on the way.
"Sir I've got more information on the world for you, There are 11 countries, two continents, and five superpowers. The ship docent exactly run on chakra, it actually is absorbing natural energy from the planet. Natural energy is like a stronger more natural chakra that can be harnessed with training, It can make you 18 Times stronger if used correctly. There are only 5 people in the world who can currently use natural energy."
"They cant gather natural energy on there own like we can so they ask sentient animals to give them 'Sage Modes' "
"Also we have currently landed in between the 'Leaf' and 'Mist' With the leaf being the strongest country, and Mist the weakest."
"The Leaf is what we used to call a democracy, while the mist is something like a communist country"
The Doomslayer put his light green V3 armor on and stored his weapons.
"Doomslayer I recommend going to the leaf village and I will try to sneak you into the chunnin exams, it will be a good strength test, but I will need a few minutes to make a fake ID for your ventures."
2 Minutes Later....
"Sir I have made a fake ID and added you to the registry so even if you get weird looks you don't have to take off your armor"
The Slayer put on his armor and gave a thumbs up as he set his portal destination to the 'Leaf'
"3...2...1... opened" The Slayer walked into the portal.
"Sir when we get to the gate I will make your suit transform with chakra to look like normal clothes, I will deactivate it when we get into the country."
The Slayer didn't respond and walked straight to the gate.
"Hey! Before you go in you need to show us you ID or get out!"
The Slayer gave him a fierce look that made the guards shiver and regret yelling.
He passed the ID made by Vega to the guards and waited for them to speak.
"Huh F. Blazkowicz that's a weird name, and you come from an island? Well whatever just don't cause trouble. Good luck in the Exams."
The Slayer took back his ID and walked into the village.
When he walked in he saw streets filled with humans, shops, and animals.
There was a huge tower in the middle of the village that had the word 'Kage' Plastered in the middle.
"Sir Follow the map I made for you, currently there is a competitive arena that you need to win. If you win you can become a chunnin. Chunnin is a rank of strength, I've already sent in your test papers before hand, so no one will suspect much if you only put your suit on in the forest."
The Slayer looked at the AutoMap and followed the path leading to the entrance of the forest of death.
He made it to the entrance where many people were standing in front of the main gate.
"This place is called the forest of death, and you will soon realize why."
A woman with black spikey hair was speaking infront of everyone.
"Sir that's the instructor, her name is Anko she will be delivering you to your station so don't act out just yet."
The Slayer nodded and waited for the lady to finish her sentence.