Yumeko Jabami (蛇喰 夢子) is the main protagonist of Kakegurui - Compulsive Gambler. She's a second-year transfer student at Hyakkaou Private Academy and the classmate of Ryota Suzui and Mary Saotome. Yumeko is a member of the family of Kirari Momobami that challenges her for Hyakkaou Private Academy.

Appearance:

Yumeko is a tall, beautiful girl with a voluptuous figure. She has long, thick black hair styled in a hime-cut and burgundy eyes. When she becomes thrilled, her eyes turn bright red. Additionally, she has pink glossed lips and red painted fingernails. She bears a striking resemblance to her late mother and her older sister. Yumeko wears the standard uniform issued to female students at Hyakkaou Private Academy: a red blazer with black trim lining the cuffs and collar, a white button-up dress shirt, a black cross tie, a black and grey checkered mini skirt, black tights, and brown loafers. She also wears a silver ring on her left thumb, which was one of her parents' wedding rings.