Lonesome_Blue are a Japanese all-female rock band bringing together the worlds of anime, voice acting and hard-hitting modern rock. The band consists of voice actresses Maiko Nomura (vocals) and Yuki Hirose (bass, vocals), accomplished session musician and East Of Eden drummer MIZUKI, and Sally, a DEAN GUITARS JAPAN artist and solo metal guitarist who joined the band in 2026.

Lonesome_Blue made their major-label debut in 2022. Following the departure of their original guitarist in 2023, the band continued as a three-piece before Sally's arrival completed their new four-member line-up, opening the next chapter of Lonesome_Blue with FOURTH DIMENSION.