Runa Yomozuki is a supporting character in Kakegurui. She is also a member of the Student Council.
Runa is a very short teen which makes that her look like a little girl. She has very light skin, violet eyes and long blonde hair with short bangs, splitted in the middle of her forehead. She wears orange hoodie with black rabbit ears over the Hyakkaou Private Academy issued uniform; a red blazer with black trim lining the cuffs and collar, a white button up dress shirt, a dark pleated skirt, a tie and white black striped stockings. As well as the academy's issued footwear, brown colored loafers with black soles. She has light pink painted fingernails.
Runa is a sadistic and two-faced person, who seems to be very cute and nice but in reality she enjoys seeing others failures and jeering at it. For example, she made fun of Mary Saotome when she confronted her for life schedule, telling her that she needs to boost her skills in pleasing guys. She also doesn't show any worry when Midari Ikishima picked out her own eye, only remarked this as "not bad".