Esprit D'Air is a British-Japanese progressive metal band formed in London in 2010 with members from Japan and England. In 2013, the band increased in popularity as their single "Shizuku" became the first playable song in the J-rock category in the video game Rock Band 3 but disbanded in the same year as members went back to Japan. Since reforming in 2016, Kai appoints session musicians and support members, which included some of the original line-up to perform with him on tour.

Oceans is the second studio album by London-based British-Japanese rock band Esprit D'Air. It was released on 18 February 2022, through the band's own Starstorm Records with a distribution partnership with AWAL and Plastic Head Distribution. Work on the album began in 2018, but was halted due to the theft of producer and singer Kai's laptop and backups in 2019, which delayed new singles and the album releases.