In the "Mysterious Continent", every citizen needs to touch the roulette crystal in the "Apocalypse Palace" when he reaches adulthood at the age of 16, and randomly draw a "natal spirit card" through genetic resonance. Cards are divided into nine grades and nine colors (white, gray, green, blue, purple, orange, red, gold), which not only determine the career direction, but also awaken the accompanying Horcrux. However, the "mechanized spirit cards" that appeared in the past century have begun to distort the rules - the card drawing system is secretly controlled by the omnic centers of the three empires, and the descendants of powerful people can increase the probability of high-level cards through gene editing.
