Kakegurui Twin

a prequel to kakegurui is set a year before the main story’s events, and is centered around saotome mary. saotome, a bright young girl born into an ordinary family, has passed her transfer examinations and has started to attend hyakkaou private academy. it’s an elite school with an exquisite twist – gambling has become a central part of the school’s rules. saotome adapts quickly to the school’s outlandish system, and soon succumbs to the gambling mania that she comes to be known for.