In One Piece, I Challenge the Strongest Across the Four Seas

Transmigrating into the pirate world just after Roger's execution, Ye Fei activates the Strongest Challenge System. Challenge the strong, and you grow stronger!

"I'm going to be the man who takes on all four seas!" Ye Fei declared.

Whitebeard: "I'll be waiting for you at the top, in the World's Strongest position!!!"

Sengoku: "That guy Ye Fei is challenging us again. He's already taken down all the Marine Admirals. Garp, you're up this time!!!"

Kaido: "What! The Marine Admirals have all been defeated, and that guy's coming to challenge me, one of the Four Emperors, Kaido!!!"

Big Mom: "He's not afraid of my Soul-Soul Fruit, and his martial arts are just as good as mine. Who exactly is this Ye Fei!!!"

Red-Haired Shanks: "How incredibly powerful must someone be to challenge the entire world!!!"

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