I Am the Strongest Magician Aboard the Straw Hat Ship

After transmigrating to the world of One Piece,

Rock awakened a Magician Roleplaying System and received the template of Shirou Emiya. To his surprise,

he discovered that he was the older brother of Luffy, the future Pirate King.

Each time he successfully completed a template, Rock would awaken a new character template,

and perfectly retain the abilities of the character he had replicated.

When Luffy set sail, Rock, who had received an invitation, became the future Pirate King's very first crewmate.

And so began an extraordinary journey.

Garp: I always wanted Luffy to join the Marines. I never expected Rock to be the dangerous one.

Sengoku: The Straw Hat Pirates must be eliminated. They already possess the power to destroy the world.

Kaido: In a one-on-one fight, I don't think I'm a match for Rock.

Mihawk: After witnessing the Sword of Victory and Contract, I realized there's still a gap between Rock and me.

When the Summit War began, with Marine Headquarters and the Seven Warlords ready for battle, Rock looked at Ea, the Sword of Rupture in his hand, and gave a sinister grin.

This novel and its characters are entirely fictional. Any resemblance is purely coincidental. Do not imitate.