One Piece: With Iron Man's Soul-Shattering Hammer, I Take Down Kaido

After transmigrating into the Pirate King world, he smashes through the execution ground in Wano Country from the start, knocking Kaido cross-eyed and foaming at the mouth with a single swing of his hammer. But this isn't the end, it's the beginning. Hidden within him are soul fragments of Mordekaiser, lord of the underworld. The System tells him that if he wants to stay alive, he must gather the four fragments scattered among the Road Poneglyphs. Otherwise, his soul will turn on him and reduce him to a puppet.

On one side is the Strongest Creature, seething with rage. On the other, the two Calamities are watching him closely. He renames himself Thorne Mordekaiser on the spot and offers Kaido his allegiance, carrying Nightfall in hand: Kozuki Oden's head in exchange for a position among the All-Stars.

But when he returns to Onigashima carrying Oden's corpse, King and Queen can barely contain their murderous intent. Want to be an All-Star? Prove your strength. Atop Onigashima, amid howling night winds, the Flame Calamity unfurls his pteranodon wings while the Plague Calamity transforms into an armored brachiosaurus, both bearing down on him. Thorne grips Nightfall tightly as green light surges around him...

Meanwhile, the fragments within him begin to stir. He is becoming less and less like himself, and more and more like the lord of the underworld who once shattered the Rune Lands. On the side, he also happened to pick up Oden's two swords and a half-finished bottle of wine.

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