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

Lei En transmigrates into the world of One Piece and immediately bonds with the God-Tier Check-In System.

Check in at Roger's execution platform and receive:

Roger's Swordsmanship at Its Peak

Check in on Sky Island and snatch the prize before anyone else:

Rumble-Rumble Fruit

From that day on, the seas have a new monster-lightning in his left hand, a legendary blade in his right.

With nothing better to do, Lei En starts raising kids on hardcore mode in the East Blue.

Ten years later, the Summit War breaks out.

Watching a shirtless, muscle-bound Luffy, his entire body coated in top-tier Armament Haki, send Akainu flying with a single punch...

Karp, eyes brimming with tears, loses it and shouts, "Lei En! How did my grandson turn into a monster who only knows how to charge in headfirst?!"

Lei En picks his ear. "Just tell me-can he beat an admiral or not?"