Yuka (with long light-brown hair), Sayuri (dark-brown hair in a ponytail) are Akane's friends, along with Asami and Hiroko. Their surnames are never revealed. They are in her class and are always seen in her company when they show up. They both are very supportive of Akane, trying to cheer her up every time Ranma is being chased by other girls. It should be noted that they are not named in the manga.
The girls are not as interested in gossiping as Hiroshi and Daisuke are, and they mostly just try to get Ranma and Akane together by dropping subtle hints in Ranma's direction. Also, their screentime pales in comparison to Hiroshi and Daisuke.
Yuka and Sayuri, along with Makoto and Shikako, are among the regular characters of Ranma ½ who have no extraordinary physical abilities; however, they do chase after Happosai along with the rest of the female students in Furinkan any time he tries to steal their underwear. In the anime, Yuka and Sayuri seem to know the theme song of the show.
Yuka was voiced by Masami Toshima in the Japanese version and by Angela Costain (Season 2) and Cathy Weseluck (Seasons 1-7) in English. Sayuri was voiced by Yoshiko Kamei in Japan and by Willow Johnson in English.