Sayuri (dark brown hair often tied into a ponytail) and Yuka (light brown hair) are Akane's closests female friends. It can be said that they are Akane's version of Daisuke and Hiroshi, with the exception that they don't seem to be jealous of Akane as Daisuke and Hiroshi often seem to be of Ranma.
They are always around to help cheer Akane up and give her support and often to help underscore Akane's feelings towards Ranma (usually negative feelings).
They have fairly small parts in the anime, and even smaller parts in the manga. Their screen time pales in comparison with their counterparts Daisuke and Hiroshi.
The Meaning Behind the Name - ゆか & さゆり
Yuka and Sayuri do not have an particular significance to their names. They are ordinary names for two ordinary girls.
Voices:
Masami Toyoshima
Masami Toyoshima provides Yuka's Japanese voice who has mostly played minor roles of background voices. She was Hanako in Pokemon, he most recurring role.
Cathy Weseluck
Cathy is best known as Shampoo and Azusa Shiratori in
Ranma 1/2, but her other works include C-ko Kotobuki in
Project A-ko, Urasue and Kagome's Mother in
Inuyasha, Mirai in
Mobile Suit Gundam, Near in
Death Note and coincidentally enough- Dorothy Catalonia in
Gundam Wing.
Voices:
Yoshiko Kamei
Yoshiko Kamei is the voice of Sayuri in Japan. He other roles include Toshi Tsukikage in
Tobe! Isami, Gema in
Digi Charat, Tonis's Mother in
Trigun and Kakipi in
Mahou Shojo Neko Taruto.
Willow Johnson
Willow Johnson is Kasumi Tendi in
Ranma 1/2 and has also played
Fatal Fury's Lily McGuire, as well as Kikyo in
Inuyasha and Lalah Sune in
Mobile Suit Gundam.