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One Piece World – Armin, Euthera
The war between the two raged for half a month.
When Arashi, drenched in blood and clutching a severed head in his right hand, leapt high and landed before the crowd, a burst of laughter broke out.
"It's all over!"
Crocodile muttered softly.
Compared with the battle forty years ago, this clash between Arashi and Imu was truly the final war.
Had Imu won, with his overwhelming strength, no one in this era would have been able to oppose him. The World Government would have risen again, plunging the world into darkness.
But that ending never came. With Imu defeated, the burdens of the past era could finally be laid to rest, allowing the new generation to rule the world in peace.
Everyone returned to the Holy City of Armien, and at last, the world was calm once more.
....
Arashi, finally healed and back in his home, suddenly saw the long-silent system reappear.
[Congratulations! The Host has successfully changed the world and defeated the Leader of the World Government, Nerona Imu.]
[For outstanding performance, the Host will now receive the following rewards:]
> Reward 1: Instead of reincarnation with a new body, the Host is granted the ability to travel directly to a new world if they desire.
Note 1: Due to the laws of another world, the Host's Devil Fruit abilities will be stripped. As compensation, the host granted Mythical Beast Phoenix Dragon Physiology.
Note 2: This reward will take effect immediately, so that the host can make proper preparation before going to the new world
> Reward 2: Due to the Host's bond with his wife, Boa Hancock, she will also be allowed to travel to the new world with additional benefits.
Note 1: Boa Hancock will revert to her peak age and gain Agelessness and an Enhanced Regenerative Healing Factor, allowing lost limbs and massive wounds to be healed. However, since Hancock has already given birth, she will become infertile due to the side effect of Agelessness.
Note 2: Her Paramecia "Mero Mero no Mi" will be stripped, and as compensation, she will be granted the ability of "Petrification" and "Lust Manipulation"
> Reward 3: As both Host and Wife are now immortal and ageless, the system will enhance their mental state, erasing nihilism and despair, and grant high talent and limitless growth potential.
> Reward 4: A system inventory with unlimited capacity is now available. (Living beings cannot be stored inside.)
> Reward 5: Once the Host is ready, he may set his and his wife's background in the next world.
Note: In the new world, the Host and his wife will be able to choose their Race, Bloodline, and Clan Background. The system will grant Hancock and Host 2 special abilities that exist in that world.
[End of Rewards. The Host may now prepare for the transfer at any time.]
Arashi stared at the system announcement in silence, feeling his body shift. His Devil Fruit powers vanished, and the Kunpeng within him disappeared, altering his very physiology.
Before a thought could take root, new power flooded him. The Phoenix Dragon awakened within, reshaping his body into something stronger. The transformation was complete in less than a minute.
"Husband!!!"
A voice jolted him from his trance. Hancock emerged from the house, her expression shocked and unbelieving.
Her aged body rapidly transformed back into the youthful beauty she once was—the Founding Empress of Euthera, the woman once hailed as the most beautiful in the world.
"Hancock…"
Seeing his wife restored, Arashi smiled through tears. The loneliness and curse of immortality, which had weighed on him for decades, were lifted.
Hancock instantly understood the change came from Arashi. Instead of asking, she embraced him tightly.
"My love, you no longer have to face eternity alone. As I promised from the beginning, I will always stay by your side. We will live together, laugh together, cry together, and love each other for all eternity.
"What was once your curse has now become our blessing."
Hearing her words, Arashi broke down in her arms, holding her as tears streamed silently down his face. Hancock gently caressed his head, soothing him with her touch.
Lifting his gaze, Arashi looked into her eyes. "I… I don't know what to say. If it weren't for you, I would have long since gone mad. You are my anchor, Hancock. I love you."
Their lips met in a tender kiss, not only of passion but of eternal promise. They held each other as if the bond between them had no end.
When they parted, Hancock whispered, "No matter what comes, I will stand with you for eternity."
Arashi smiled back. "And I will love and protect you for eternity."
That night, under the starlit sky, Arashi revealed everything about the system, his immortality, and their transformations.
"I ended the World Government and changed this world. Now, I'm allowed to travel to a new dimension while keeping my powers. But Hancock… I'm sorry. Even though you're young again, you're now infertile."
"Do not worry, my love," Hancock replied gently. "We already have two children to be proud of. That is enough for me. In the new world, we will face everything together."
Arashi nodded, relieved. "Before we leave, we must at least bid farewell to our family and friends."
"Of course," Hancock agreed with a smile.
That night, they finally allowed themselves to rest.
...….
The next morning, a new system message appeared:
[The Host has chosen to travel to a new world. Initiating world selection…]
[Selection Complete. The chosen world is: Ninja World – Naruto/Boruto]
[The Host may now decide his and his wife's background and timeline.]
"Naruto World… Their strength rivals ours, and the Boruto era is on another level altogether," Arashi thought.
He shared the news with Hancock, and the two began discussing their new identities. The discussion lasted until the afternoon.
They chose to become pure-blooded Ōtsutsuki Clan members, their powers modelled after Kaguya's but even more advanced.
Second, their timeline would begin before the end of the Second Ninja World War.
They would live in the Land of Fire as members of the Senju Clan with royal status, taking the names Senju Arashi, while Hancock are the direct descendants of the Daimyo of the Land of Fire and the Land of Whirlpool.
Both would be recognised as elite jōnin and considered Kage-level powerhouse by the ninja world.
The system promised to perfect all details of their background. Arashi then confirmed their choices.
[Background Confirmation Complete.]
[Due to both of your strengths, both will receive experience, skills, chakra, and jutsu befitting elite jōnin of Kage-level prowess. As Ōtsutsuki, you both will receive a unique Doujutsu and will possess Yomotsu Hirasaka.]
[Special Abilities Granted:]
Boa Hancock: Temporal Rewind and Daikokuten, integrated into her dōjutsu name: Ryugan.
Arashi: Clairvoyance and Amanoukihashi (Space-Time Jutsu) , incorporated into his dōjutsu name: Teiogan
[All abilities are granted at Max Level and will activate upon arrival in the Naruto World.]
[For Ryugan and Teiogan, the Doujutsu will be start in Level 1 and each level up will may unlock new abilities]
Arashi was surprised when he realised that the system had so generously granted both him and Hancock abilities that were utterly broken.
After finalising their background, the two began their preparations. Knowing that he would be going to the next world, and with his talents already enhanced.
Arashi spent time in multiple departments, gathering and compiling knowledge from the Vegapunk era to the present day.
He didn't stop at medicine and science—he delved into technology, engineering, and every corner of Vegapunk's inventions.
In particular, he studied Vegapunk's greatest creation: the perfected Seraphim.
Unlike the earlier versions, which required lineage factors and Lunarian genetics, this final model was independent of such constraints.
Thanks to Arashi's advice, it was designed to be 90% similar to an Android from the Dragon Ball world.
This Seraphim was more human, capable of independent thought and learning, yet remained completely loyal to its creator and owner. Its power could vary according to its design, ranging from the strength of a normal human to that of a Yonko.
Of course, the cost reflected that. At human-level strength, creating one required 50 million berries.
But a Yonko-level Seraphim, equipped with infinite energy and full physical capabilities, could cost as much as 50 billion berries—and that was before factoring in weapons or special abilities.
Speaking of infinite energy, Vegapunk had perfected his legendary invention: the Mother Flame.
He explained that once created, its energy would perpetually replenish itself, endlessly sustaining output without ever depleting, as its source was reality itself.
It took Arashi an entire year to fully master and document all of this knowledge—the sum of the world's wisdom—so he could take it to the new world for further refinement.
During that year, he also gathered the finest materials he could find, ensuring nothing would be left behind.
....
At last, with preparations complete, Arashi and Hancock decided to announce their departure to their family and friends.
The news shocked everyone. Seeing Hancock restored to her youthful self left them equally stunned, and knowing that this would be the final time they would see them filled their hearts with bittersweet sorrow.
Their loved ones decided to hold a farewell party on the day of departure.
Old friends and allies came to celebrate.
"I never thought you'd actually go to another world. How terrifying~" drawled Kizaru, now ninety-nine years old, yet still deceptively youthful.
"How envious! An adventure in a whole new world! If I were young again, I'd beg you to take me with you!" Luffy exclaimed between bites of meat.
Currently at sixty, married to Nami, with two sons and a daughter, he had long since become a grandfather—but his love for adventure still burned.
"Hahaha, even if you were young again, I couldn't bring you," Arashi chuckled. "Only Hancock can follow me."
Kuzan's quiet voice cut through the laughter. "For immortals like you, going to another world is probably the best. Watching your loved ones die one after another must be… unbearable."
The air grew heavy at his words, making him scratch his head. "Arara… did I say something wrong? Forget I said anything."
Arashi smiled gently. "No, you're right, Kuzan. Without this chance to leave… without giving Hancock her youth again… I don't know what would've happened to me. Madness, despair, insanity—perhaps all of it."
His son, Armin, now the reigning Emperor, stepped forward. "Father, all of us—your family, friends, and allies—support your choice."
"Even if this is our last meeting, knowing you are alive somewhere is enough. Please, just be happy and protect Mother. Don't let her feel sadness."
Warmth filled Arashi's chest at those words. "Thank you, all of you. I promise, I'll never forget."
Then Anna, his daughter, stepped forward with a bright smile. "I've been preparing for this! Over the past ten years, I have collected photos of your entire journey, Father. From the day you joined the Marines until now."
"I even brought a camera so we can take one last picture together!" She proudly revealed a massive album.
Arashi, surprised, flipped through its pages: his days as a Marine recruit, his promotions to Vice Admiral, Admiral, and Fleet Admiral, his rise as Emperor, his marriage to Hancock, the births of Armin and Anna—all captured in pictures, spanning joy, struggle, and sorrow alike.
"Thank you, Anna," he said, deeply touched.
The party paused for an extended photo session, filled with laughter and memories, before resuming with celebration.
....
At last, the farewell drew to its close. Family and friends gave gifts, tokens of remembrance.
When Anna finally broke down, clinging to her parents, her voice trembled. "Dad, Mom… you're the greatest parents I could ever wish for. I'll make sure your legacy lives forever. I'll miss you so much!"
Hancock stroked her hair, smiling warmly. "I'll miss you too. But I don't need to worry, because my proud daughter has already achieved her dreams."
Arashi looked at Armin, who stood silently, head lowered. "Come here, Armin."
The young Emperor stepped forward. His father swept him into a strong one-armed embrace.
"As an Emperor, I am proud of what you've built. But as a father, I'm proud of the man you've become. Cherish those who trust you. Never betray them."
"I understand, Father," Armin whispered, tears spilling as he clung tightly to him.
Arashi looked at his children with a soft smile. "Even a thousand years from now, we will remember you. You will always live within us."
They embraced for several long minutes, reluctant to part.
Finally, hand in hand, Arashi and Hancock looked at the loved ones gathered before them.
"Everyone," Arashi said, "this is our last meeting. So allow me to leave you with one gift."
Golden particles drifted from his hand, flowing into everyone's bodies. Gasps of shock filled the air as warmth and strength surged through them.
"I've rejuvenated your bodies, healed your old wounds, and erased all traces of illness," Arashi explained with a smile. "This is my final gift to all of you."
Gratitude shone in their eyes. Arashi chuckled softly, glanced at Hancock, and saw her nod.
System, are we ready?
[Starting transmission in 3… 2… 1…]
"Goodbye, everyone. Meeting you has been the greatest joy of my life," Arashi declared as golden-white energy enveloped him and Hancock.
The energy flared, shooting skyward and leaving the world behind.
Those who watched were awestruck. Anna and Armin smiled through their tears.
"Mom! Dad! Have a safe trip! I hope you both find happiness in the new world!" Anna shouted.
When the light faded, silence fell. Then Armin raised his head. "Everyone, I want to build a monument to honour my parents."
"So that they will always be remembered—not just as Emperor and Empress, but as the ones who changed this world for the better, will you stand with me?"
"Of course," Luffy said without hesitation.
"For Senior Brother, of course, I agree", Koby said.
"I agree," Kuzan added, nodding firmly.
Voices of agreement rose all around.
Thus, the monument would be built—not only to honour Arashi and Hancock, but to preserve the history of how a man born a slave rose to become the strongest being in the world, and with his wife, reshaped it into something better.
-End Story-
{Thank you so much to everyone who's been supporting me until now! As you might've noticed, this chapter was written completely by me, the translator. I couldn't bring myself to give the MC a sad ending where he has to watch his family, friends, and everyone he cares about pass away one by one—so I decided to give him the happy ending he deserves.
As for the Naruto world, that'll be my own fanfiction, but it'll probably have to wait until next year. In the meantime, I've got a new novel coming to Webnovel in the next weeks!}
(T/N: Please give me some power stone, I hope it can at least reach the top 100)
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