One Piece: With Sign-in System

Sea Calendar Year 1517

…

East Blue, Foosha Village…

Ace bid farewell to Luffy, Makino, and Dadan. Alone, he set sail to embark on his adventure.

…

White Rock Island, Baltigo, on the Grand Line.

Now 18 years old, with two long swords hanging at her left waist, Kuina bade farewell to Dragon, Ivankov, and Sabo.

Wrapped in a black cloak and carrying a bundle on her back, she walked away alone into the vast world.

Having reached the realm of the Iron Cutting Swordsman, Kuina had mastered both Armament Haki and Observation Haki over the past two years. Now, it was time for her to set out and find that person—to fulfill the promise they had made during that snowy night.

…

East Blue, Shimotsuki Town's Dojo.

Sixteen-year-old Zoro had just achieved a breakthrough in swordsmanship. During a sparring match with his master Koushirou, he utilized his Three-Sword Style and successfully performed his self-created technique, Oni Giri!

But Zoro knew all too well—

This was still far from enough.

To catch up to Kuina, to catch up to that person, this level of skill was nowhere near sufficient!

He had to train even harder, to push himself beyond his limits!

…

East Blue.

Having left Cocoyasi Village, Nami had already made a name for herself as the "Cat Burglar" across several islands in the East Blue.

Whenever she heard people talk about the legendary tales of that nameless ship and the traveler Ron, a bright, joyful smile would inevitably appear on her face.

…

Arabasta.

Because of Ron's actions, Crocodile's plans had been delayed by an year. Nonetheless, they were still set into motion.

At the beginning of the year 1517, the Dance Powder incident erupted in Arabasta, igniting rebellion and plunging the entire kingdom into chaos under the control of its underground emperor, Crocodile.

Thirteen-year-old Princess Vivi, upon learning from her father Cobra that all of this was Crocodile's conspiracy, suddenly recalled that fateful night three years ago.

She remembered the mysterious boy who had taken the Poneglyph and prophesied the dire situation Arabasta now faced.

The memory was so vivid, so deeply etched in her mind, that every detail of the boy's appearance and his words remained crystal clear, as if carved into her heart.

"First, do not trust Crocodile."

"Second, if your kingdom ever faces a grave danger, you may tell Crocodile that the stone tablet has already been taken by me."

Grave danger… was this what he meant?

Vivi wasn't sure.

"Third, if you ever meet someone named Luffy, tell him that I will be waiting for him in the New World."

Luffy? Who was he?

And who exactly was that boy?

Princess Vivi stood in the courtyard of the Royal mausoleum, the place where she had first met him, gazing up at the bright moon in the night sky. Her thoughts wandered.

Could he save this kingdom?

…

North Blue.

Under the night sky filled with countless stars, waves surged gently across the vast, boundless sea.

A radiant ship glided across the waters under the cover of darkness.

On the deck—

Seventeen-year-old Ron, now taller at 1.95 meters, his features sharper and more defined like a finely chiseled sculpture, stood by the railing.

The sea breeze brushed through his hair as he gazed up at the star-filled sky, lost in thought.

"System, show me my current stats."

[Understood.]

[Host: Ron]

Age: 17

Vitality: 3167

Transparent World: Lv4

Sun Breathing Technique: 100% Mastery

Swordsmanship: Iron Cutting Realm (Mastered)

Essence of Strength: Lv3

Ultimate Move: Ultimate Kick — Lv2

Weapons:

Great Grade Sword – Raikiri

Great Grade Sword – Black Blade Shusui

Permanent Buff: True Intent of Tempering (Binding in progress...)

Armament Haki: Lv6 (Second Stage)

Observation Haki: Lv5 (Second Stage)

Conqueror's Haki: Lv3 (First Stage)

Shave: Lv10

Moonwalk: Lv10

Tempest Kick: Lv10

Special Skills:

Mechanical Mastery, Navigation Mastery, Linguistic Mastery, Healing Arts, Purification Arts

Special Treasures:

King's Treasury, Endless Wine Flask

Special Items:

Devil Fruit Replication Card, Senzu Bean...

Ron gazed at the stats panel in front of him and let out a soft sigh.

Although his strength had increased significantly over the past two years, the rate and scale of his improvement had noticeably slowed down. Even with the support of the gravity chamber, increasing his vitality through training alone had become exceedingly difficult.

The rewards from signing in at ordinary islands generally only provided an incremental 10-point vitality boost, with little else to gain.

"At this rate, reaching a level strong enough to defeat Aokiji might take several more years," Ron thought to himself as he looked up at the starry sky.

And there were only three years left before the main story began.

Most of the islands in the East Blue, South Blue, and West Blue had already been signed in at. Once he finished signing in at the islands of the North Blue, his next destination would be the Grand Line and the New World.

Islands connected to the original story held a higher probability of granting special rewards during sign-ins, whereas ordinary islands generally only boosted vitality.

This was a conclusion Ron had drawn from his extensive experience with sign-ins.

Compared to the four blues, famous islands and locations in the Grand Line and the New World were likely to yield greater rewards—places like Amazon Lily, Fish-Man Island, Punk Hazard, Dressrosa, Zou, and Wano Country.

"What are you thinking about, Captain?"

A familiar voice broke his train of thought.

Robin's voice came from in front of him.

Ron turned his head and saw her approaching, dressed in white denim shorts and a green-and-white striped t-shirt. Her long legs moved gracefully as she walked toward him.

Compared to when they first met, Robin's once sun-kissed wheat-colored skin had become fairer, making her appear even more stunning.

"Here."

Standing before him, Robin handed Ron a glass of milk.

Ron accepted it.

"Thank you."

Robin smiled softly, her eyes curving like crescents. She leaned back against the ship's railing, sipping her own glass of milk.

Under the starlit sky, the two stood shoulder to shoulder, leaning against the railing on the deck.

"It's been almost three years… time really flies," Robin remarked wistfully.

"Yeah," Ron replied, taking a sip of milk.

"In Arabasta, I promised you that we'd travel and adventure together, and search for the truth behind history."

"I haven't forgotten that promise. Once we finish exploring the North Blue, we'll officially set out to find the Poneglyphs."

"We're returning to the Grand Line, then?" Robin asked softly.

"Yeah."

"The Poneglyphs are a taboo of the World Government. The Marines won't sit idly by," Robin said.

Ron nodded, his expression calm yet determined.

Robin tilted her head back, gazing at the starry sky. "If there really are four red Poneglyphs that serve as the road signs to Raftel, it's very likely they're controlled by the Four Emperors or other powerful factions in the New World. Trying to retrieve them from such forces will inevitably lead to conflicts with these mighty powers… Just thinking about it feels daunting."

She turned her head to look at Ron and smiled. "Sometimes, I wonder… What if we stopped chasing that blank period of history? What if we just kept traveling happily like this until the end of our lives? Wouldn't that be nice too?"

Ron looked at her and was about to reply when his eyes suddenly sharpened. He raised his head and stared at the sky.

In the night sky above the sea, a massive shadow drifted by, blocking the moonlight and starlight that had illuminated the small ship.

"What is that…?"

Robin's voice trembled slightly as she looked up at the sky in shock.

When the shadow moved on, the moonlight returned.

Robin could finally see the massive outline of the shadow clearly, and her heart was filled with awe.

"That's… an island?!"

A floating island, suspended in the sky!

"A levitating island," Ron murmured, a gleam flashing in his eyes.

The ability of the Float-Float Fruit, wielded by the legendary pirate, Golden Lion Shiki!

He turned to Robin, who was still stunned by the sight, and said, "I'll go check it out. Stay here and wait for me."

Ron was just about to take a step and use Moonwalk to pursue the floating island when he suddenly paused, as if remembering something. He turned back and smiled at Robin.

"Oh, about what you said earlier—I don't agree."

"A life with regrets isn't a complete life."

"If you have the chance, you should try. What's there to be afraid of? That's what chasing dreams and adventure is all about."

Robin stared at him, momentarily stunned.

Ron then stepped down hard with his foot, causing the entire ship to shudder and dip considerably. His figure shot upward like a cannonball, streaking toward the rapidly receding floating island.