I Take Akainu as My Underling from the Start

I transmigrate into One Piece and become Byrnndi World, who has been frozen in Impel Down for thirty years.

The original World was relentlessly hunted and imprisoned by the World Government and the Navy. After breaking out of the ice, he lost to Luffy's unreasonable protagonist's halo.

He devoted his life to building a giant cannon for revenge, determined to wipe away every humiliation. In the end, Hawkeye split the cannon apart with a single slash, shattered his final obsession, and left him broken in spirit, dying with hatred in his heart.

I arrive in his body with a modern mind, carrying all of World's madness and overwhelming hatred.

At the brink of death, I awaken a System, rebuild a king-class physique, and trigger the complete resurgence of my twice-as-powerful Devil Fruit. I wield the Black Abyss Wolf Fang Club, a weapon comparable to the Supreme Grade Blades.

My first battle after landing on an island is against Admiral Akainu!

Defeating him grants a one-time use of the strongest genjutsu, Kotoamatsukami, which can permanently rewrite one person's will.

With the whole picture clear to me, I don't kill Akainu. Instead, I plan to use my one chance at genjutsu to turn this iron-fisted admiral to my side.

I have returned, with vengeance enough to engulf the seas!

I'll settle old scores with the Navy and World Government, avenge the cannon destroyed by Hawkeye, and crush Luffy's protagonist's halo.

The destroyer of the old era has returned to shatter the Celestial Dragons' rule and rewrite the order of the entire sea with my own hands!

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