Hyakkaou Private Academy is an elite school where a student’s social status isn’t determined by grades or athletic ability, but by high-stakes gambling. The academy secretly runs on a twisted hierarchy: students gamble enormous sums of money against each other, and those who lose badly fall into debt and are labeled “pets,” stripped of their dignity and forced to obey their superiors. Pets wear tags, endure public humiliation, and are treated as less than human, while winners rise in power and influence. This brutal system encourages manipulation, mind games, and obsession, revealing how greed and desperation can corrupt people when risk and reward control every aspect of their live