Known for her work in such Japanese anime series as YuYu Hakusho (as Kurama), Neon Genesis Evangelion (as Shinji Ikari), and Sailor Moon (as Sailor Uranus), she also had a career as a singer, producing such albums as Yoake no Jikan and Rain.
Early in her career, she released several 1990s vocal albums, including Marine Legend, Half Moon, and Winter Bird; she often performed and recorded under the stage name of em:óu.
Her deeper-than-average voice meant that she was often cast in male anime roles.
She was born in the Chiyoda ward of Tokyo, Japan. She began her second marriage in 2004.