Kakegurui Twin is a prequel/spinoff to the Crazy Gambling Manga, focusing on Yumeko's frenemy Mary Saotome. A year before the events of mainline Kakegurui, Mary is an assertive working class student who arrives at Hyakkou Academy on a scholarship, earning the instant ire and suspicion of her wealthy classmates. Initially resistant to the school's all-gambling culture, watching her childhood friend Tsuzura Hanatemari's torment by a classmate plunges Mary into the deceitful jungle of high school gambling. It's largely more of the same, though Mary faces a new villain (the leggy, snake-eyed Sachiko, who drags around her personal "house pet" on a leash) and a side character, the idealistic Aoi, who schemes to bring down the Student Council for his own ends. While much of the supporting cast are bland compared to the original run's weirdos, Mary is a much more compelling protagonist than nutty Yumeko ever was, because in this incarnation she has fresh-eyed ambition, a class-driven chip on her shoulder and an admirable sense of loyalty to her friends which make her easy to root for. This spinoff likely won't win any new converts to Kakegurui-dom, but those of us already devoured by the "calm madness" will enjoy it well-enough.