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One Piece: Becoming the strongest pirate (COMPLETED)

An ordinary person from earth gets transmigrated into One Piece world. He wakes up in an uninhabited unknown island in east blue. Follow his struggle as he tries to survive in this cruel world and become the strongest pirate. (MC is not Ace) Disclaimer: I do not own one piece or any of its characters and I also do not own the cover image.

Captain_Erebus · Anime & Comics
Not enough ratings
145 Chs

Calvin VS Katakuri

"T-The heavens…cracked open!!" gasped one onlooker as they beheld the immense power emanating from the two combatants. With a deafening roar, the shockwave of their clash sent a shockwave rippling outwards, hurling everyone in the vicinity back with bone-crushing force. Those who had witnessed the scene would never forget the sheer magnitude of the power that had been unleashed, nor the ferocity of the battle that had precipitated it.

"Maaamamama! Ha ha ha ha!...You shitty brat, I've sunk hundreds of people like you, you think you're the first one to come after my head?!" Big Mom grinned wickedly as she spoke, her voice dripping with malice "There can only be one pirate king, only one who can reach the end and claim the ultimate treasure. Do you think you have what it takes to be that person?"

"Hundreds of people like me? Bitch there is only one Ashen!...and when I'm through with you I'll be going after that scaly bastard Kaido! There is nothing that's going to stop my way!...Ahahahaha!!" Ashen said, his laughter echoed through the air, wild and unhinged "And you're mistaking something, becoming the king pirates is not the end…" Ashen added while clenching his fist tightly.

"Not the end?" Big Mom was intrigued by Ashen's statement.

"*Smile*…I'm going to flip this world upside down, after becoming the strongest pirate I will become the King of The World!…I'll conquer everything and start a new age!" Ashen's voice boomed with excitement as he declared, "I will carry on Xebec's will and achieve what he could not!" His words caught Big Mom off guard, her eyes widening at the mention of her former captain's name.

"Xebec?!!" Big Mom gazed at Ashen in surprise for a moment before she spoke again "How do you know that name?! Who the hell are you kid?!"

"I'm the man who's going to become the king of the world!" The air crackled with energy as Ashen's declaration rang out, his body enveloped in a searing blaze of indigo flames. Without hesitation, he launched himself at Big Mom, his movements blurred by the speed of his Inferno Jet Step technique, taking Big Mom by surprise "Say hi to Xebec in hell!"

On the opposing end of the battlefield, the clash between Calvin and Katakuri was intensifying, their combat reaching a fever pitch as they unleashed their full power upon each other.

Katakuri held the upper hand in their clash, utilizing his formidable foresight ability to predict Calvin's every move. Furthermore, Calvin had sustained grievous injuries in his prior battle with Big Mom and was far from peak physical condition. Yet, even in his weakened state, Calvin remained a formidable adversary, wielding Advanced Armament and Conqueror's Haki with devastating effect. A few well-placed blows from Calvin could spell defeat for Katakuri, so it was a battle of who's going to let his guard down first.

"Mochi Hadan!" Katakuri turned his hand into mochi and made a finger gun. He then hardened his index finger with Armament Haki and fired it at Calvin like a bullet.

*BAM*-*BAM*-*BAMThe bullets whizzed past at lightning speed, carrying with them enough force to inflict serious damage on Calvin. With his mastery of Observation Haki, Katakuri had already foreseen the precise path of Calvin's evasion, and aimed his shots accordingly, leaving him no chance to dodge or escape.

"Huff…Huff…How do I counter his future sight?" Calvin asked himself, trying to figure out a way to counter Katakuri's future sight, before he proceeded to use his thumb finger to send series of devastating shockwaves towards Katakuri by combining Hasshoken and Shigan.

<Finger Flick>

The attacks forced Katakuri to dodge giving Calvin a chance, he proceeded to quickly use Soru while sending a shockwave from his feet to dash towards him. He then proceeded to ignite his arms with fire using friction while coating them with Advanced Armament and Conqueror's Haki before he appeared on top of Katakuri.

"Ragnarok?...That's the same attack as before, interesting" Katakuri stated as he calmly turned his head towards the airborne Calvin.

"Ragnarok!!-*SPLASH*!!!!....AGHHHH!!!" Unfortunately for him Katakuri already saw his attack two seconds prior and quickly thrusted his weapon at his stomach, stabbing him while leaving a large open wound.

Calvin quickly used Geppo and Soru to fly back before he fell on his knees, holding his stomach in pain while bleeding heavily.

"*Cough*-*Cough*…I feel dizzy…" Calvin was barely holding awake, because he lost so much blood he might fall unconscious and collapse any second.

"As expected, this is your limit too…Even if you have the power to take me down, it won't help you if I can see it coming before you even preform it" Katakuri stated, standing in front of Calvin, towering over him with his extreme height. Calvin was silence while on his knees, panting heavily from exhaustion.

"This is it for you, I'm taking my revenge for my brothers" Katakuri declared, his veins bulged from anger as he remembered his dead brothers, before he aimed his weapon at Calvin's heart and proceeded to strike him down "Die--?!!!"

"You again…" The moment he was about to kill him, Katakuri was interrupted seeing the future where Enel struck him with a massive lightning beam.

"El Thor!!"

*BOOOM* Katakuri proceeded to dodge his attack and backed away after that.

"Sorry Calvin, this all I can do for now…" Enel said before he collapsed on the ground again face down, he used all his remaining strength in that attack.

"The emperors have been ruling the New World for decades, mama is not an exception…You think a bunch of brats like could take her down?" Katakuri said in anger while gazing at them "Even if you manage to defeat me right here, there is no way your captain would defeat mama…It will be the same outcome no matter what, you will all die here today!"

"H-Hahaha…Ashen will lose? That man is the most ambitious person I've met in my life, he won't stop here even after defeating that old hag, and believe me he will…and when that happen you will share the same fate as your brothers" Calvin said with a smirk trying to provoke Katakuri so he could lose his cool as he recalled Ashen's words on his weaknesses 'He said Observation Haki can't be used if you're not calm…He also said Katakuri has a weakness when it comes to his brothers and sisters'

"Don't you dare say that again!" Katakuri shouted as he started getting furious, he quickly lunged at Calvin and used his strongest attack. He turned his entire body into mochi and rapidly spined towards Calvin in a donut-like shape. When he reached him, he returned to normal shape and, using the momentum from the spinning, slammed his enlarged mochi forearm, covered in spikes and hardened with Armament Haki, into Calvin with tremendous force.

*BOOOOM* The impact was powerful enough to send a shockwave rippling through the air, normally this attack would've dealt a tremendous damage, but to Katakuri's shock Calvin simply blocked it by crossing his Haki-coated arms.

"H-How?"

"Your Haki is weaker than mine, it's simple as that" Calvin stated as he protected his entire body with Conqueror's Haki, Advanced Armament Haki and Tekkai to protect himself from any attack.

Calvin took advantage of Katakuri's surprise and quickly closed the distance between them, and dealt a strong uppercut sending him flying upwards without giving him the chance to use his future sight. As Katakuri seemed suspended mid-air, Calvin quickly flew on top of him and slashed his chest open with a Haki-coated Rankyaku, before he ignited both his arms with fire and dealt the last strike.

"Ragnarok!!"

*BOOOOOM* He used Hasshoken while emitting Armament Haki and Conqueror's Haki towards Katakuri, creating a massive shockwave explosion destrying the whole area.

"…Ma…Mama…" Those were the last words of Katakuri, before his eyes rolled back and he crashed down on the ground drowning in his own blood.

"If it means helping Ashen…I'll bring destruction and annihilate all of his enemies…I'll become the King of Oblivion!"

[Sweet Commander Charlotte Katakuri VS Calvin Helios]

[Winner…]

[Calvin Helios]