
Quick answer — Eriko Nakamura voices Haruka Amami in The Idol Master, Chisato Sumiyoshi in Love, Election and Chocolate, Ui Nakatsugawa in A Bridge to the Starry Skies and 9 more characters.
Eriko Nakamura voices Haruka Amami (The Idol Master), Chisato Sumiyoshi (Love, Election and Chocolate), Ui Nakatsugawa (A Bridge to the Starry Skies), Noel Marres Ascot (Walkure Romanze), Hamuzou (The Idolm@ster: 765 Pro to Iu Monogatari), Chapatsu (Ben-To), Fuurouta (Concrete Revolutio: THE LAST SONG), Rei (Reikenzan: Hoshikuzu-tachi no Utage) and 4 more.
Haruka Amami is voiced in Japanese by Eriko Nakamura.