Transmigrating into One Piece: My System Is Ridiculously Overpowered

After transmigrating into the world of One Piece, Roy awakens the strongest golden finger.

Life Editor: Modify the settings of the One Piece world, tag characters, and change the course of events!

Meta Chatroom: See everyone's inner thought bubbles, check their affection levels, send private messages, and post world announcements!

While Luffy is still shouting passionately that he wants to become the Pirate King, Roy has already seen his inner thought bubble: Meat! I want meat!

While Nami is still wondering whether she can trust this man, Roy has already seen her affection level.

While Ace is still suffering over the mystery of his birth, Roy has already received a System quest: Change the fate of Portgas D. Ace and stop him from dying in the Summit War!

Roy looks honest on the outside, but inside, he is relentlessly snarky.

He's going to use his brains to play the One Piece world!

He'll change every tragedy. Ace must live! Whitebeard can't die! Robin must find happiness! The Pirate Empress must chase after him!

This is a story about rewriting the One Piece world with reason and a System.

This is a legend where every character finds happiness.

Since this is a hot-blooded manga, I'll save the world with my brains!

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