- Hikaru - Born July 2nd, from Toyama Prefecture. Appeared in commercials and musicals from age 5. Active as a member of Kalafina since 2008, performing theme songs for numerous hit works. In 2019, began solo activities to utilize the expressive power and vocal skills cultivated over approximately 10 years, handling theme songs and lyrics for various anime works. Currently active as a freelancer since 2022.