A novel that requires the protagonist to wear books and many vests.

Who can touch the extraordinary in the wave of steam and machinery? In the fog of history and darkness, who is whispering? I woke up from the mystery and opened my eyes to see the world: guns, cannons, huge ships, flying boats, and poor development; Potions, divination, curses, hanging people upside down, seals ... the light is still shining, and the mystery is never far away. This is the legend of a "fool".