A middle school sophomore at Sakashitamon Academy as well as a tenant at the girls' dormitory. She has what Hachibei considers "ideal breasts." The trait is revealed to be hereditary because her older sisters have the same breast shapes but are larger. Her mother, however, doesn't have them at all. Yukari is very bashful, partly because boys make fun of her breasts, which are bigger than her peers'. She excelled at Kyūdō and is the district champion. She is secretly a part of an otaku dōjin circle.