After Eating the Personality Fruit, I Used the Swordsman's Personality to Slay a Celestial Dragon from the Start

Roy, Luffy's cousin, transmigrates into the world of One Piece. From the start, he eats the Personality Fruit. When the Celestial Dragons sail through the East Blue and bombard Sabo, leaving him badly wounded, Roy activates the swordsman personality of his "Most Evil" persona and kills a Celestial Dragon.

Roy's Most Evil swordsman persona awakens after he eats the Personality Fruit, with the help of the Super Assistant System.

Besides his Most Evil persona, the System helps Roy develop other personalities, including a battle maniac and a short-tempered one...

Second, the "Battle Maniac" persona: Charge in headfirst! Kaido, Whitebeard, come fight me! I'll crush you both!

Third, the "Most Evil" persona: This corrupt world should be destroyed by my sword!

Fourth, the mischievous persona: Big Sister Momousagi, would you become my toy doll?

Fifth, the short-tempered persona: Useless! You can't even beat Golden Lion! You and Golden Lion are both useless!

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