Starting life as the son of Sengoku, the Buddha, is like living in paradise. Born with a cheat system, there's nothing to fear. Transmigrated into the world of One Piece as Donquixote Rosinante, the younger brother of Donquixote Doflamingo, he faces the grim reality of being killed by his brother in a few years. Rosinante isn't worried, though. His godfather is Sengoku, and he has a system to boot! Years later, Rosinante looks at a distraught Doflamingo and says, "My foolish brother, what do they call you again?" This story is also known as: "I, with my League of Legends equipment system, inherited my godfather's will in the One Piece world, became an admiral, defeated pirates and the World Government, and shook the world!" PS: This story follows a Marine protagonist; there is no defection.