Jin ft. Aki Okui is a shared billing used for releases credited to Jin and Aki Okui together, rather than a separate long-running group. The entry centers on Aki Okui (奥井亜紀), a Japanese singer born on 19 October 1971 in Itami, Japan, who has released music through Warner Music Japan and maintains an official site at okuiaki.com. For anime-music cataloging, this credit is useful when a song appears under one joint artist name and listeners need to trace it back to the individual performers.
Recent Japanese music coverage in June 2025 also pointed to renewed activity around 奥井亜紀, including a new release announcement and the start of a tour, which shows that the artist remains active. In practice, the Jin ft. Aki Okui credit helps preserve accurate attribution while connecting collaboration releases to Aki Okui’s broader career.
