Starting with Saitama's Form, I Become the Navy's Strongest Hero

Luo Yan transmigrates into the world of One Piece, becomes Sengoku's nephew, and awakens the Hundredfold Rebate System.

Whenever a contracted character makes a breakthrough in their growth, he receives a hundredfold rebate.

Contracted character Sengoku detected. After eating the Human-Human Fruit, Mythical Zoan, Model: Buddha, the user receives a hundredfold rebate: the Human-Human Fruit, Mythical Zoan, Model: Saitama.

Contracted character Monkey D. Dragon detected. After mastering Dragon Claw Fist, the user receives a hundredfold rebate: Dragon Fist.

Contracted character Shanks detected. After awakening basic Supreme King Haki, the user receives a hundredfold rebate: advanced Supreme King Haki.

And so, a naval hero whom the world would call invincible was born.

Rocks: Of all the Marines I've ever met, no one has been more impressive than you. I have to call you the strongest.

Garp: The hero Luo Yan has fists harder than this old man's.

Roger: Luo Yan is the only one who can capture me.

Dragon: Luo Yan, am I doomed to live in your shadow for the rest of my life?

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