Seafaring: Weapon Fruit, I Forge Ryujin Jakka with My Own Hands

After transmigrating into the One Piece world, Rosen becomes one of Zephyr's students. From the start, he has a Weapon-Weapon Fruit and a max-level talent for heaven-defying comprehension.

With his heaven-defying comprehension, he creates all kinds of astonishing abilities.

"Your comprehension is heaven-defying. By contemplating and understanding your own body, then combining that insight with the Paramecia-type Weapon-Weapon Fruit, you comprehend an exclusive skill: Senbonzakura."

"Your comprehension is heaven-defying. By contemplating and understanding your own body, then combining that insight with the Paramecia-type Weapon-Weapon Fruit, you comprehend an exclusive skill: Ryujin Jakka."

"Your comprehension is heaven-defying. By contemplating and understanding your own body, then combining that insight with the Paramecia-type Weapon-Weapon Fruit, you comprehend an exclusive skill: Zangetsu."

Sengoku: He is the Navy King who reigns over the world.

Shanks: His Haki can crush the Great Pirate Era.

The Five Elders: His blade can sever the Great Pirate Era and bring the World Government's rule to an end.

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