賭ケグルイ / Kakegurui Series by Homura Kawamoto

Hyakkaou Private Academy. An institution for the privileged with a very peculiar curriculum. You see, when you're the sons and daughters of the wealthiest of the wealthy, it's not athletic prowess or book smarts that keep you ahead. It's reading your opponent-the art of the deal. What better way to hone those skills than with a rigorous curriculum of gambling?At Hyakkaou Private Academy, the winners live like kings, and the losers are put through the wringer... moreHyakkaou Private Academy. An institution for the privileged with a very peculiar curriculum. You see, when you're the sons and daughters of the wealthiest of the wealthy, it's not athletic prowess or book smarts that keep you ahead. It's reading your opponent-the art of the deal. What better way to hone those skills than with a rigorous curriculum of gambling?At Hyakkaou Private Academy, the winners live like kings, and the losers are put through the wringer. But when Yumeko Jabami enrolls, she's gonna teach these kids what a high roller really looks like! less

The Student Council President is away, and the rest of the council will play...Yumemi Yumemite is a super popular idol who's a big hit in the indie scene. Not only is she a student at the Hyakkaou academy, but she's also a member of the student council?! How will Yumeko do in a gamble with an idol?

The gambling games continue...and this next game has truly lethal consequences. Will Yumeko be able to figure out its secrets in time to keep from losing her life?Sayaka has had just about enough of Yumeko Jabami! The student council secretary wants to rid the school of Yumeko's poisonous influence once and for all, so the president sets the stage for the craziest gamble yet-the enigmatic Tower of Doors! Will Sayaka's cold logic triumph over Yumeko's chaos?