The East Sea's Mad Swordsman: From the Start, Nine-Headed Dragon Flash!

After transmigrating into the world of One Piece, Karl gains a Sword God Template System. The more fully he fuses with a template, the stronger he becomes.

Himura Kenshin, Nameless, the swordmaster Yasuo, Wu Liuqi...

Mihawk: "You've got to be kidding me! You call yourself a rookie after using the Nine-Headed Dragon Flash?"

Garp: "How many times do I have to say it? Karl has nothing to do with me. But his swordsmanship really is superb!"

Sengoku: "He's only a teenager, yet his swordsmanship has already surpassed Mihawk's. That kid is terrifying!"

Kizaru: "Why was my Yasakani Sacred Jewel blocked by a single wall of wind? How am I supposed to fight him?"

As Karl continues to fuse with the Sword God templates, his power grows ever greater.

From the moment Karl appeared, the title of World's Greatest Swordsman was already on shaky ground.

"Kaido, I hear your defenses are incredible. Can you withstand this: Myriad Swords Return to the Origin?"

This novel and its characters are entirely fictional. Any resemblance to actual people or events is purely coincidental. Do not imitate.