Sumika Warakubami

Sumika is a member of The Hundred Devouring Families. She arrived to the Hyakkaou Private Academy to gamble against Kirari Momobami in order to dethrone her from student council president position and thus choosing a new leader of their clan. Secretly, she's also a famous Hollywood actress who goes by the name of Kawaru Natari, who Yumemi Yumemite looks up to.