Hu De Hill unexpectedly transmigrates to the world of One Piece and obtains a Witness System. By witnessing the plot, he can draw prizes to become stronger. He starts by drawing the strongest breathing technique from Demon Slayer - the Fire God Dance - Sun Breathing. In the East Blue, he follows Luffy on a man's romantic adventure, becoming the Straw Hat Pirates' dancer and embarking on the world's greatest adventure. PS: Following the ship.