"Kirari has declared an open election for student council president, but more than just the school is on the line! The entire Momobami clan has sent envoys to Hyakkaou Private Academy in the hopes of winning not only the election, but also leadership over the family. The gambling gets right underway when the young Erimi Mushibami challenges Yumeko to a game of Finger-Cutting Guillotine! In this dangerous game, the only way to win is to risk it all....

"After losing big to a member of the student council, Yumeko finds herself deeply in debt and cast down to the rank of "housepet" in the Hyakkaou Academy hierarchy. With her future hanging in the balance, the student council tournament may be Yumeko's only chance for redemption. Teaming up with former rival, Mary - who is currently suffering the same subhuman indignity - Yumeko's prepared to go all in for another shot at the high life. But will luck...