Kurumi is "a girl with astonishing beauty" as described by Shido Itsuka. She appears to be elegant and has very polite manners, but she hides her actual cheekiness inside. She has pearly skin and long, black hair usually tied in long twin tails. Her right eye is red-tinted while her left eye appears as a golden, inorganic clock face, which is covered by her bangs and only revealed when she transforms into her Spirit form. Her height is stated to be 157cm, and her three sizes are B85/W59/H87.