Kakegurui Twin(2021)

Kakegurui Twin is a prequel series set one year before Yumeko's arrival at Hyakkaou Academy. Saotome Meari, a girl from an ordinary background, passes her entrance exams and enters the prestigious school, only to discover its brutal tradition: the Baptism of Gambling. Paired with Yumeko as her "twin," Meari is thrust into the school's high-stakes gambling underworld. As she navigates cutthroat games and dangerous wagers, Meari discovers her own gambling addiction and competitive fire. The series explores how she transforms from an innocent newcomer into a fearless player willing to risk everything. Kakegurui Twin combines intense psychological drama with the school's dark gambling culture, revealing the origins of the franchise's most compelling characters before the main story begins.