Seafaring: Beating Up Luffy, Sorry, You're Not the Main Character

The story takes place after Luffy becomes the Pirate King!

Some say Enel should have gone to the moon, because a god does not belong in this world. But he didn't. After losing his memory, he fell into the muddy waters of the Blue Sea. When he saw an unfamiliar yet familiar face on a wanted poster, a voice in his mind kept telling him: Kill him! Kill him!

Kosiri came from twenty-first-century Europe and entered a completely unfamiliar world. He stirred up a storm of bloodshed and became this world's hero. What Pirate King? That title should belong to me, the one who transmigrated!