Nozomi Yamamoto and Haruka Yamazaki are Japanese singers and voice actresses who have contributed music to anime productions. Their work as music artists is closely tied to their roles as performers of character songs and theme music for television anime series.

Nozomi Yamamoto was born on August 9, 1988, in Aomori Prefecture, Japan, and is affiliated with the talent agency VIMS. Haruka Yamazaki was born on June 27, 1991, in Kanagawa Prefecture, Japan, and is affiliated with the talent agency ARTSVISION and the record label NBCUniversal. Both artists are established voice actors who have expanded their careers into singing, performing theme songs and character image songs for projects in which they are involved.

The most notable musical collaboration between Yamamoto and Yamazaki is their work on the 2015 television anime series Absolute Duo. The series, produced by studio 8-Bit, aired from January 4 to March 22, 2015. For this production, Nozomi Yamamoto performed the first ending theme song as a solo artist, titled Believe X Believe. She performed this song in her role as the character Julie Sigtuna, whom she also voiced in the anime.

Yamamoto and Yamazaki performed together as a duo for the second ending theme song of Absolute Duo. The song is titled Apple Tea no Aji (アップルティーの味), which translates to Taste of Apple Tea. This track was performed with Yamamoto as Julie Sigtuna and Yamazaki as Lilith Bristol, the character Yamazaki voiced in the series. The song was used as the ending theme for episodes four through seven of the anime.

Beyond their joint credit on Apple Tea no Aji, both artists have pursued individual music careers connected to their voice acting work. Haruka Yamazaki made her formal debut as a solo singer in February 2018 under the NBCUniversal record label. Her musical output includes character songs for the various anime and game roles she has portrayed, as well as theme songs for series in which she appears. For instance, she has performed ending theme music for anime series where she also voiced a main character. Nozomi Yamamoto has likewise built a discography of character songs tied to her numerous voice acting roles across anime and game franchises, including the extensive The Idolmaster series. She has also released rap content and written lyrics under the name MC Nojo, demonstrating her creative range beyond conventional voice acting and singing.