In the wave of steam and machinery, who can touch the extraordinary? Who is whispering in the fog of history and darkness? I woke up from the mystery and opened my eyes to see this world: Guns, cannons, giant ships, airships, difference machines; magic potions, divination, curses, the Hanged Man, sealed objects... The light still shines, and mystery is never far away. This is a legend of "The Fool".