One Piece: Fruit-Stacking System, Starting with a Mythical Zoan

[Stacking Devil Fruit powers] [Stealing the abilities of Devil Fruit users] [Master swordsman] [Three Types of Haki] [No backing] [Building his own force] [Youngest of the Four Emperors] [Ending the Paramount War] [Reaching the peak of the pirate world] [World's Strongest Man!!!]

“The Chivalrous Pirates are monsters who'll attack pirates and Marines alike!”

“The Four Emperors, huh? Sounds interesting. Bring the ship in!”

“The Paramount War? What's he doing here? This is going to be a huge problem!”