Motoyoshi Iwasaki is a Japanese composer, arranger, guitarist, and singer born on March 19, 1962, in Hokkaido. He began his professional music career in 1986 as the leader of the band Motoyoshi Iwasaki & WINDY, which released four singles and two albums. Following the group's dissolution, he established himself as a prolific composer and arranger for other vocalists while also continuing to perform as a session musician and solo artist. His body of work includes extensive contributions to anime soundtracks and character songs, where he has been credited as a composer, arranger, chorus performer, and vocalist on numerous albums throughout the 1990s and beyond.

Iwasaki's work in anime is extensive. He composed and arranged music for the soundtrack of Metal Fighter Miku and contributed as a composer and arranger for Mobile Fighter G Gundam and Mobile Suit V Gundam. He provided chorus work for the Lord of Lords Ryu Knight soundtrack and was involved in the vocal collections for Ushio & Tora, including composing and arranging songs for that series. His credits also include arranging and composing for Taiho Shichauzo (You're Under Arrest), Dirty Pair FLASH2, and Kishin Douji Zenki. Beyond his compositional work, Iwasaki has occasionally performed theme songs, most notably the ending theme for the Babel II original video animation.

The artist known as MacKanako is a vocalist and lyricist whose documented career is closely tied to specific anime projects from the early 1990s. As a singer, she performed the ending theme for the third episode of the Babel II OVA, and her lyrical work appears in the 1995 original video animation Battle Skipper, also known as Campus Beauty Warrior, for which she wrote the lyrics for the third ending theme and an insert song. Her discography also includes performances on children's music compilations, such as the song Yahho! Shinkansen for the long-running educational program Hirake! Ponkikki.

MacKanako and Motoyoshi Iwasaki are jointly credited as performers for the ending theme of the fourth and final episode of the 1992 original video animation Babel II. The song is titled Sunrise ~ Akatsuki ni Idakarete (Sunrise~暁に抱かれて). This credit represents a direct collaboration between the two artists on a single piece of music for an anime series. The soundtrack album for this OVA, Original Video Animation Babel II Original Sound Track II, released on June 5, 1992, features MacKanako as a performer on the track Kaze ni Kikitakute... and lists both MacKanako and Motoyoshi Iwasaki as performers on the final track, Sunrise ~ Asayake ni Dakarete. For the Babel II OVA, the theme song arrangements and compositions were handled by Takeo Miratsu, with lyrics by Kazuko Sakata for the ending themes performed by MacKanako and Iwasaki.