In the dangerous world of One Piece, Arthur, a transmigrator with burning ambition, knows that power is the only path to freedom. He craves the ultimate weapon: the Rumble-Rumble Fruit, a Logia-type Devil Fruit said to hold the power of a god of lightning.Stranded on the pirate haven of Jaya for five long years, Arthur sheds his past life and embraces cunning and ruthlessness. He trains relentlessly, manipulating those around him, all to reach his goal.His daring plan: to ride the Knock-Up Stream, a suicidal current that launches ships to Skypiea. It's a gamble for godhood, or a plunge to a watery grave.....After a year of searching, he stumbles upon a relic of the past—an Ancient Ship holding secrets and a—Treasure Beyond Measure.....