9 years later...
Naruto has been busy with his Haki cultivation and sparring for nine years. He has successfully cultivated the major part of the first half of Haki cultivation, that is, he successfully strengthened his muscles and internal organs using armament circulation. His body, although not muscular, still has enormous strength behind the well-defined chiselled-shaped muscles. He is still required to strengthen the sense organs and brain to complete this first part and then balance the circulation with conquerors to complete the final stage and achieve a breakthrough.
'By my calculation, it would still require me 5 years to complete the entire process including the rests and disturbance caused due to not being in system space anymore.'
'Anyway, when I get out of the system I will be 10 years of age, so by the time I am completed with this training, it will already be time for Shippuden. Anyway, I should get this spar over with.' Naruto mused between his spar with Roger, Garp and Xebec.
"Young boy, you really grew splendidly. Now you have surpassed us old generation and even the overlord of the seas" Roger laughed as he stopped his sword and acknowledged the blond boy in front of him. He has seen the growth of this young man for the past thirty years in this magical space and highly appreciate his tenacity.
"If only Marines had a good seedling like you" Garp added as he regretted not finding someone like the blond boy for the Marines who even surpassed the top three of the world combined.
"Tch! Garp you bastard, as long as you Marines bastard serve those Pigs you will never find someone as talented as him to do their bidding," Xebec added, his annoyance for the celestial dragons evident from his statement.
"I know" Garp sighed dejectedly.
Over the course of nine years, when Shanks started sparring with multiple partners as one partner at 100% wasn't much of a challenge, there started to be a strange friendship between the Overlord of the Seas and the Pirate King and Naval Hero.
"Garp san, Xebec san is right, If I were in your world I would already be planning to overthrow the world government. I know marines are necessary for the common populace but still, events like Ohara really leave little to be desired about your organization. Anyhow until there are marines like you and Zephyr, it is still good, but if by any play of fate, I come across Sakazuki, I will execute him right there." There was a cold undertone in Naruto's voice as he spoke the last sentence.
"Believe me, young lad, I want that too, but discussing this will get us nowhere"
"Fine, since this is the last day, and I can already see you guys are getting exhausted, let's go for a final all-out attack to wrap this up. And once again thanks for all your guidance and support throughout my training, I wouldn't be here without any of you" Naruto bowed before getting ready for the final assault.
"Got it, kid! get ready!" exclaimed Roger as conquerors danced around his blade. Garp's fist turned black and the same conquerors entangled around his fist giving off a terrifying aura. Xebec also coated his sabre with Conquerors as he got ready for his ultimate attack.
"Divine Departure!"
"Galaxy Impact!"
"Obsidian Crescent!"
Roger and Garp's moves overlapped as they caused destruction in their wake, destroying the entire landscape and causing a kilometre-wide pit to appear just due to the aftershocks.
As Rocks executes the Obsidian Crescent, the crescent-shaped arc of his blade creates a vacuum, enhancing the cutting power.
As Naruto faced these catastrophic attacks he unleashed his own ultimate move, coating his Gryphon with conquerors at the tip and pointing his sword at the sky.
"Celestial Mirage Thrust!" (I am just making this move, there is no such sword move in one piece)
The Celestial Mirage Thrust evokes a sense of heavenly apparitions. As he executes this move, an ethereal glow envelops his blade, creating an illusionary image of celestial bodies surrounding him. These celestial bodies danced around Naruto as he seemingly summoned one body towards his blade and bellowed:
"Fist form: Mars' Warpath Cleave!"
The Mars' Warpath Cleave is not just a strike; it's a declaration of war. As Naruto swings his blade, shockwaves of force emanate, creating a battlefield tremor. The destructive energy mimics the impact of a celestial body colliding, shattering defences and leaving opponents vulnerable.
When the four destructive forces collided, the aftermath of the collision was devastating, the entire island was shattered to pieces. Mind that, this was no small island. In one of those smaller islands scattered in the wake of destruction, three figures can be found, their body battered and bruised, they found no energy to get up. A fourth figure simultaneously emerged exhaustion etched on his face as one of his arms, which wielded one of the supreme swords, loosely dangled from his shoulder, blood dripped continuously from it.
"Tch!, still can't complete the move without causing harm to myself, these moves from celestial mirage thrust put way too much pressure on my body, in the system space I can get treated instantly, but in the outside world, I can't use this move, until I strengthen my body further."
"Well, whatever, it was a good fight. Xebec san, Roger san, Garp san thanks once again, now I will let you guys rest."
There was a small smile etched on the faces of the three figures who laid on the craters. Their bodies slowly started vanishing.
"System kun, how much time do I have?"
[Host only has 10 hours left]
"Okay, end the spar, let my arm heal, and I will rest and have a good meal before wrapping things here"
[Affirmataive host]
9 hours later...
'Thanks, system for the last 30 years, now that I had my fill of meat and booze, I can finally return to the original world, but I have a request, can I take the meat and booze outside, you know'
[Negative host, the system has already done everything, and these things are just complementary and cannot be taken out of system space]
"Hey, but you said, I can take Gryphon with me, so why not meat, and you already have an endless amount of it?"
[Gryphon comes from the 100% template of Shanks, as for meat that is the system's complement]
'Tch! stingy system'
[Well if that's all, the system will begin the process of returning you to your original world]
'Will there be any additional changes to my body system?'
[No, as stated, the system will just reduce the size of your body to your original size when the system first binded with you. As for the life force you spent here in thirty years will also be returned so you won't age a single day. As for any additional change, your body will regain this size in the next 4 years.]
'uhm!, system can you change my hair to red as in Shanks'
[We can do that, that property of the physique was repressed to keep the outer appearance from changing too much, but if the host wants, the system can lift the repression, and your hair will be fully red in the next 2 years. Anything else host?]
'No, you can proceed with the changes and send me back'
Finally, now I can start enjoying my second life, without any regrets this time. With sufficient strength, even the dance king can't harm me anymore and as for the pot king, just you wait for me!'
A bright light surrounded Naruto's body as found himself back in his bed in his apartment. As soon as he came back to his senses, he discovered a presence near his window, he cast a brief glance but dismissed the next second.