Yumeko Jabami is the main character of Kakegurui. She is a transfer student at Hyakkaou Private Academy and classmates with Ryota Suzui and Mary Saotome. Yumeko's family is aligned with Kirari Momobami's family who challenges her to Hyakkaou Private Academy. Yumeko is shown to be a very upbeat and charismatic character who constantly attracts the affection or interest of those around her, usually making a big scene.