Yuko Ishibashi (石橋優子 Ishibashi Yūko) is a Japanese singer, born April 3, 1980 in Tokyo, with a four octave vocal range. She is most well known for her vocal performances in Gust-produced video games such as the Ar tonelico series and Atelier Iris 3: Grand Phantasm. She has also performed in various Japanese television advertisements and events, theater, and children's programmes. Her debut album Haruka naru Toki no Utagoe was released January 2008.
She is the younger sister of Chie Ishibashi, better known as Chie Sawaguchi.
Yuko was the voice of Faintear Imitate in Triggerheart Exelica (Arcade, Dreamcast and XBLA versions), the voice of Ver'mith Ennda in the Dreamcast exclusive "Story Mode" of the game and the game's System Voice in all its ports. However her role as Ennda and the System Voice was uncredit throughout the games, except on Triggerheart Exelica Enhanced where she was credited as the System Voice.
Her roles as Imitate and Ennda in Enhanced were voiced by Natsuko Kuwatani as she was unable to reprise them for unknown reasons.
Yuko Ishibashi's official site (Japanese)
Yuko Ishibashi's Blog (Japanese)