A hundred years ago, space rifts swept across the Blue Star, phantom beasts invaded, and humans awakened to the Kasshi system - hunting phantom beasts to extract their essences, sealing them into cards, using the sea of cards to carry the cards, and cultivating with the power of phantom beasts. Kasshi became the guardian and top class of human civilization. The social system is completely built around Kas. The awakening ceremony of the senior year of high school is the only threshold for ordinary people to change their destiny. Kas. The college entrance examination determines the upper limit of life. And now I was standing at the door, about to cross the threshold.
