To save the kingdom, he'll have to stop his own murder...

It’s hard to be a drunken idiot when the world keeps burning down around you. Cairn, the charming-yet-utterly-irresponsible heir to the Uskarrion throne, is all too happy to toss the crown aside. But an invasion, conspiracy, and rise of a terrifying villain result in his untimely death.

Then, Cairn reawakens. It's a decade earlier and he's in his childhood body. But he remembers everything...There's much to accomplish. First, however, he'd really love to stop himself from dying.

With the rising tide of steam power and machinery, who can come close to being a Beyonder? Shrouded in the fog of history and darkness, who or what is the lurking evil that murmurs into our ears?

Waking up to be faced with a string of mysteries, Zhou Mingrui finds himself reincarnated as Klein Moretti in an alternate Victorian era world where he sees a world filled with machinery, cannons, dreadnoughts, airships, difference machines, as well as Potions, Divination, Hexes, Tarot Cards, Sealed Artifacts…

The Light continues to shine but mystery has never gone far. Follow Klein as he finds himself entangled with the Churches of the world—both orthodox and unorthodox—while he slowly develops newfound powers thanks to the Beyonder potions.

Like the corresponding tarot card, The Fool, which is numbered 0—a number of unlimited potential—this is the legend of "The Fool."