
Quick answer — Emiko Hagiwara voices Mayu in Elfen Lied, Fantine in Les Misérables: Shoujo Cosette, Ryofu Housen in Koihime†Musou and 2 more characters.
Emiko Hagiwara voices Mayu (Elfen Lied), Fantine (Les Misérables: Shoujo Cosette), Ryofu Housen (Koihime†Musou), Yuu Yoneda (We Without Wings – Under the Innocent Sky), Shiori Momono (11eyes).
Mayu is voiced in Japanese by Emiko Hagiwara.