This book tells the story of the protagonist, Jiang Liufeng, who accidentally travels to the world of One Piece and discovers the Super Check-in System. From then on, he soars through the One Piece world, stirring up chaos and sweeping across the land as a peerless master! He eventually journeys through time and space once again to the even more exciting worlds of Naruto, Dragon Ball, and beyond. Seven Warlords of the Sea? Supernovas? Just ants! Overlords of the Sea? Four Emperors? Three Admirals? Nothing special! Five Elders? Celestial Dragons? Just as impressive! How much of a shock will this protagonist bring to the One Piece world? What epic stories will he bring to the world? Where will the next check-in point be? What eye-catching rewards will he receive? Enter the One Piece: Check-in Game, Starting from Impel Down! Witness the moment together!

(If you don't like it, be careful!) Lin Yu traveled through the pirate world, and at the beginning he received a pirate group devil fruit given by the system. As long as he recruited special crew members, he could gain benefits, and by forming a bond with them, he could gain their abilities. In this way, Lin Yu's road to becoming the king of Marijoa began. Sengoku: Damn Lin Yu, return Tina and Gion. Kaido: Kid, put down Runti Yamato! Big Mom: Katakuri, where is Smoothie? Kingdom of Women: Hey, where is the Empress? Lin Yu sat high on the void throne, overlooking the world. "I am the king of the world, isn't it reasonable for me to have three palaces and six courtyards?"