Ruka's most identifying features are her short black hair and blue eyes tied up

Ruka's most identifying features are her short black hair and blue eyes tied up with a ribbon, usually a blue one. With her ribbon off, her hair is a voluminous layered bob. She's often in her school uniform, which consists of a white button up with a tie, a blue blazer and a hiked up skirt. During her rental dates, she usually wears a turtleneck sweater with a variety of patterned short skirts. Her casual wear usually consists of sundresses, though she wears longer sleeved clothing and leggings when dressed up for conservative occasions. Ruka has a womanly figure that belies her youthful appearance. Although she personally admits her figure isn't as filled out as Chizuru's,[5] she is described as having a sizable bosom and long, slender legs. She is considered very attractive, often comparatively with Chizuru by the male characters, and tends to gather a lot of attention when in public.