Become a Businessman from Devil Fruit

Gao Xiao has a trading system of all realms, and his shop has a door to all realms. The people who make transactions with him come from all over the world, and he can get system points after completing the transaction. One Piece World, Whitebeard: "Boss, is there anything that can help me return to my peak strength? I'm going to Marinevando to save my precious son!" In the Death God World, Kurosaki Ichigo: "Boss, give me another top-quality Zanpakutō! Then Yhwach will definitely not be my opponent!" In the Northern Han Immortal Territory, the leader of the Qingxu Sect said: "Sir, I want this top-quality alchemy furnace. I don't believe that I don't have any talent for alchemy!" In the doomsday world, the sleeping ancient god: "I want to break one of my godheads!" From then on, the story of this No. 1 Businessman in all worlds with unfathomable strength and unparalleled treasures spread throughout the world.