Seafaring: Maxing Out the Weapon Fruit, Starting with the Divine Spear

After transmigrating into One Piece and snatching the Weapon-Weapon Fruit, Ye Kai has no choice but to hide on Thunder God Island to escape the Donquixote Family's relentless pursuit.

Just as Vergo arrives with troops to hunt him down, Ye Kai awakens the Devil Fruit Upgrade System.

Ding! Weapon-Weapon Fruit upgrade successful.

Weapon-Weapon Fruit Lv. 20: Any part of the body can become one of two Zanpakuto, and the user can wield their Shikai.

Zanpakuto: Shinsou, Tenken.

Doflamingo: Kaido, he stole my Devil Fruit, took over Dressrosa, and seized my title as a Warlord of the Sea.

Kaido: Doffy, even a coin falling from the sky has to belong to someone surnamed Ye.

Benn Beckman: Shanks, do you think we can hold on to the Gum-Gum Fruit?

Shanks: In these seas, anything Ye Kai takes a liking to will belong to him sooner or later.

Ace: Ye Kai, this era belongs to Whitebeard.

Whitebeard: Don't talk nonsense. If he respects me, he calls me Whitebeard. If he doesn't, he tells me to get in the ground.

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