One Piece: I'm Just a Marines Captain, Don't Panic

Xia En never imagined that an accident would send him from the 21st century, where he was just an ordinary office worker and “model young man” who loved food, enjoyed joining in the fun, and couldn’t take his eyes off a pretty girl, to the world of the Pirate King. At the time, Luffy had yet to be born, and the Great Pirate Era had not begun. Xia En became a Marine recruit of mediocre talent, utterly unremarkable in a crowd. Fortunately, he was bound to an “Automatic Training System,” and his beginner’s gift package gave him a bug-level Paramecia weather fruit. The fruit’s power was astonishing. He could control wind, rain, thunder, and lightning, and at its peak, even precisely manipulate temperature, air pressure, and humidity. With the System’s nonstop training, it took him only a few years to reach the pinnacle in physical combat, Haki, and his Devil Fruit abilities. His strength was unfathomable, and even the Four Emperors and Admirals were no match for him. But Xia En had no ambitions. Deep down, he loathed the Celestial Dragons, who treated human lives as worthless, and refused to risk his life for those “pigs.” He insisted on keeping his post as a Marine colonel and lazing around in the East Blue, sunbathing, sampling delicious food, and enjoying the scenery. Only three veterans, Garp, Sengoku, and Tsuru, knew his true strength, along with the Three Admirals, who had vaguely sensed something was up. They turned a blind eye to his “slacking off.” After all, keeping an invincible powerhouse like him in the Marines was a deterrent in itself. Though Xia En seemed to want no part in the world’s affairs, he was secretly waiting for the right opportunity, determined to bring the rotten World Government down for good.