
Quick answer — Chiyo Ousaki voices Sara Rukawa in D.C.III: Da Capo III, Mihiro Miyase in Wagamama High Spec, Koume Shirasaka in THE IDOLM@STER CINDERELLA GIRLS and 1 more characters.
Chiyo Ousaki voices Sara Rukawa (D.C.III: Da Capo III), Mihiro Miyase (Wagamama High Spec), Koume Shirasaka (THE IDOLM@STER CINDERELLA GIRLS), Mink (Demon Lord, Retry!).
Sara Rukawa is voiced in Japanese by Chiyo Ousaki.