She is a first-year student who belongs to the "Flower" class at Hyakkaou Private Academy and a member of the Student Council whose father is the president of a prominent toy company in Japan. Itsuki has chin-length light caramel brown hair with bangs that are swept to the right and reaches her eyebrows with a green hairband in her hair, blue eyes and she has pink painted nails with star-like decorations on them (her nails are decorated with the suit of clubs in the manga), but she now currently has bandages around her bloody fingers after she ripped her nails out during the gamble against Kaede Manyuda.

She wears the Hyakkaou Private Academy issued uniform; a red blazer with black trim around the cuffs and collar that is decorated with gold buttons, underneath she wears a white button up with a black tie as well as a pleated skirt with black stockings that have silver stars on the sides of them along with a pair of brown loafers with black soles.