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

Rayne is transmigrated into the world of One Piece and binds the

[Divine Check-In System]

at the start. He checks in at Roger's execution platform and obtains

[Roger's Peak Swordsmanship]

! He checks in on Skypiea and hijacks the

[Rumble-Rumble Fruit]

! From then on, the sea gains a monster with lightning in his left hand and a famous blade in his right. With nothing better to do, Rayne starts a hardcore childcare mode in the East Blue. Ten years later, the Summit War breaks out. Looking at the shirtless, top-tier Armament Haki-wrapped "muscle-bound man" Luffy, who sends Akainu flying with one punch... Garp, red-eyed and on the verge of collapse, shouts: "Rayne! How did my grandson turn into this kind of monster who only knows how to charge headfirst?!" Rayne picks his ear: "Just tell me, can he beat an admiral or not?"