Kyōko Koizumi
They formed songwriting team in the mid 1990s, the era that Okuda disbanded Unicorn and launched his solo career. 1995 saw the first release of their collaborative material, "Tsuki Hitoshizuku" co-written and sung by pop icon Kyōko Koizumi. In the following year, the pair wrote the song "Asia no Junshin" for Puffy, the new female pop duo produced by Okuda. It was released as Puffy's debut single in May 1996 and became a huge hit, peaking at number-three on the Japanese Oricon singles chart and selling over 1.18 million copies. "Shopping" features the remake versions of above‐mentioned songs by Inoue and Okuda, along with 10 of new songs that they wrote together.