Run by a corrupt and sadistic school council, the “system” at Hyakkaou is based on gambling, with losers who cannot cover their debts being demeaned by their peers and forced to serve their debtholders. And if that’s not terrifying enough, some games can result in losing an eye, one’s fingernails, or even their life! But the system is shocked when transfer student Yumeko Jabami arrives. Dark, mysterious and attractive, she’s a wildcard who...

In a bold effort to rebalance the social scales at Hyakkao Private Academy, student council president Kirari Momobami intends to place her bet on the election for the council’s next president. Everyone starts with a single chip, and at the end of 30 days, the whoever holds the most becomes the president of the Momobami Clan. But chips aren’t the only things students can wager, and Yumeko Jabami intends to clean house no matter the prizes she must...