Yumeko Jabami

Family: He belongs to the Jabami family, a minor branch of the Momobami clan.
Sisters: She has an older sister named Souko Jabami (whose medical expenses she covers with her gambling winnings) and her appearance is identical to Yumeko's.
Status: At the academy, although she is a transfer student, she quickly becomes someone whom the entire Student Council watches with fear and fascination.

A second-year student at Hyakkaou Private Academy, she is a beautiful young woman with pale skin and long, black, herme-cut (straight bangs) hair that reaches her waist. She has burgundy eyes that turn bright red when she's in a state of high spirits from gaming. She wears the standard academy uniform: a red blazer with black trim, a white shirt, a gray plaid skirt, and black stockings. She wears a silver ring on her left thumb.

Charismatic, optimistic, polite, and extremely intelligent. However, she possesses a manic obsession with high-stakes gambling. She's a compulsive gambler who isn't looking to win money, but rather to feel the adrenaline rush of danger and uncertainty. When she gets excited, her eyes glow a deep red. She's perceptive and easily detects cheating, but often lets her opponent cheat just to make the game more exciting. She's kind and friendly with her friends like Ryota and Mary, but can be psychologically terrifying to her opponents.