Mary Saotome

Mary Saotome is a deuteragonist of Kakegurui and also the main protagonist of the spin-off series Kakegurui Twin. She is a student at Hyakkaou Private Academy, and she is also a classmate of Yumeko Jabami and Ryota Suzui, who is the first character in the entire series that challenges Yumeko and loses against her. Mary is a girl in charge of Yumeko's class when she transfers in, and the first casualty of her gambling skills. Forced into house pet status after attempting to make up for her losses by challenging Yuriko Nishinotouin, she ends up partnered with Yumeko in the school's debt consolidation game and becomes something of an ally after their victory.