Takashima Kouyou is a normal country boy. He loves to play RPG tabletop games with his friends, he strive to help his numerous family with the horses at their ranch and has quite good grades. But one day, Kouyou's mother sent him to greet their new neighbor: a mysterious man with long black hair, shiny dark eyes, moonlight-pale skin and a sardonic character. He, Kouyou gasped, eerily resembled the antagonist of Kouyou's last roleplay campaign. The Onyx Czar.