Yoko Ishida made her debut with the song Otome no Policy, which is the ending theme for Sailor Moon R. She then performed and wrote lyrics for many anime and games such as Ah! My Goddess, Pretear, and the Strike Witches series. In 2003, Ishida released her first album sweets in the U.S. and made her overseas debut. She then toured successfully during the Anime Fusion Tour with 13 stops in the United States from 2005 to 2006. She has performed in twelve different countries and is active worldwide as an anisong singer. She is still very active on releasing songs and is supported by a diversity of fans of all ages. Her angelic voice will continue to be heard worldwide.