Traveling through time and becoming Kaido, the Beast King of the Pirates?! Discovering that the timeline is thirty-one years before the plot begins?! His own strength and potential have been greatly enhanced?! So what are you waiting for? Just do it! Bring down the high-and-mighty Celestial Dragons. Destroy the Marines, destroy the Celestial Dragons, and destroy Im. The throne of heaven has waited for its master for far too long. It's time to take it!

After his defeat on Onigashima, Kaido, submerged in the seabed's lava, opened his eyes and was reborn in 1484, serving as a trainee on Rocks' ship. The God Valley Incident was about to unfold! "One bad thing after another. If defeat by Joyboy is fate, then I will tear it apart!" Kaido picked up the Eight Saber Rings, and with a wielding of his Domineering Haki, he blasted the mountain to smithereens. A Devil Fruit awakened? Enveloped in Domineering Haki, he could see and kill! Only Haki could forever stand at the top of the world! In this age of brilliant heroes and powerful warriors, Kaido must rely on his own strength to challenge Roger and Whitebeard and make up for the regrets of his past life!

Remos traveled to the world of pirates and activated the destiny simulation system.

As long as you follow the concept of destiny, the degree of fit will continue to improve, and you will walk on it and become a destiny traveler.

"My first destiny is hunting? Very good. From today on, I'm a sea ranger... Hey, that title is quite fitting."

Remos blew on the muzzle of his gun, threw the bounty order on the pirate's body, and said with a smile.

New York, a city with a far greater number of super criminals and a higher crime rate than Gotham. Just as Gotham needs Batman, so does New York. He journeys through New York with no money, no equipment, no butler, and only a strange body. He starts from scratch, everything from scratch.

When the socially awkward former Water Pillar Tomioka Giyu suddenly travels to the world of One Piece and is forced to bind to a baffling "Interpersonal Communication Manual" system, witnessing the Straw Hat Kid on the execution platform, about to be executed by Buggy, saving him, breaking the platform, and becoming entangled seem like the natural progression. Luffy: "Wow! What a cool move! Be my partner!" When the taciturn Giyu encounters the most free-spirited pirate group, this sea is destined to be turbulent by the least chatty swordsman. ... "Let's have a party, Giyu!" [Interpersonal Communication Manual] [Target: Monkey D. Luffy] [Status: Extremely Excited] [Preferences: Throwing parties, hanging on to the host] [Suggestion: ... (Analysis impossible)] Right now, that rubber boat captain is swinging from my only arm. What should I do now...