One Piece: Conqueror's Haki from the Start, and My Little Brother Is Ace

He transmigrates into the world of One Piece and becomes Ace's biological older brother.

Because of him, their mother, Rouge, rewrites her fate of death.

On the day he is born, his first cry sends Conqueror's Haki soaring into the sky!

He persuades Luffy, Ace, and Sabo, his three younger brothers, to join the Marines, making old man Garp beam with joy.

What happens to the original Straw Hat Pirates? Of course they get enlisted in the Marines, all arranged together!

What? I've become a Bird-Bird Fruit, Mythical Zoan, Model: Sunbird user?

Keh heh heh! It's time to show the world what a true Sun God is!

Power, wealth, and beauty: I want it all!

There can only be one king in this world!