Two-Way Portal: I Took Over Momonosuke's Body and Slaughtered Kaido

Ron transmigrates into One Piece, only to discover that he is sharing a body with Momonosuke.

Momonosuke's recklessness and insolence bring Ron's hatred of him, both from his past life and now, to its peak.

Ron takes over Momonosuke's body and erases his existence, obtaining the Dual-World System.

Since I've transmigrated as Momonosuke, I have to make up for every regret.

Ron takes up the two famous swords Ame no Habakiri and Enma.

Thus begins his journey to save Wano Country.

Kurozumi Orochi: "I refuse to believe this is Momonosuke!"

The Nine Red Scabbards: "Our young lord can save Wano Country all by himself. Why would we need to step in?"

Yamato: "As expected of Kozuki Momonosuke! He opened Wano Country all by himself!"

Kaido: "My greatest regret is not killing Momonosuke sooner!"

Momonosuke: "The Four Emperors are nothing special. I can cut them down with a single sword strike!"

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