When a mysterious new student council president arrives at Hyakkaou Private Academy with plans to revolutionize the gambling hierarchy, Yumeko Jabami finds herself drawn into the most complex and dangerous game of her life. As ancient gambling traditions clash with modern psychological warfare, alliances form and shatter like glass, forcing students to question everything they thought they knew about risk, reward, and the true meaning of victory. The academy's very foundation trembles as secrets buried deep within its prestigious walls begin to surface, threatening to destroy not just the current power structure, but the lives of everyone who dares to play. In a world where a single bet can determine your entire future, Yumeko must navigate treacherous waters filled with brilliant minds, hidden agendas, and stakes higher than she's ever imagined.