One Piece: Starting Check-In, Hijacking the Rumble-Rumble Fruit

Ryan transmigrates into the world of pirates and gets the [God-Tier Check-In System] from the start.

He checks in at Roger's Execution Platform and gets [Roger's Peak Swordsmanship]!

He checks in on Sky Island and snatches the [Rumble-Rumble Fruit]!

From then on, a monster with thunder in his left hand and a famous sword in his right roams the seas.

With time on his hands, Ryan starts raising a kid the hard way in the East Blue.

Ten years later, the Paramount War breaks out.

Watching Luffy, now a bare-chested muscleman wrapped in top-tier Armament Haki, punch Akainu flying...

Garp cries out in despair, his eyes red: "Ryan! How did my grandson turn into a reckless monster who only knows how to charge in?!"

Ryan picks at his ear. "All I'm asking is, can he beat an Admiral or not?"