Just play games, just play games, what kind of time travel? Is it normal for my gender to change after time travel? A middle-class otaku girl dreamed of traveling through the mobile game "The Absurd Millionaire King Arthur" and was involved in an epoch-making killing game. The competition between the high-intelligence high school students and the killer agents, the endless reincarnation of nightmares, death and rebirth again and again. What about the protagonist's halo? What about cheating as promised?