Alice Nine is a Japanese visual kei rock band formed in Tokyo in 2004. They were a part of PS Company until 2014. The band had King Records as its record label until 2010, when they joined Tokuma Japan. Then, in 2013, the band joined Universal Music Group's Nayutawave Records. They shortened their name to A9 in 2015, but switched back to Alice Nine in 2019. In 2023, Alice Nine announced that they would be going on a indefinite hiatus from September 3, following a last tour that began in May.

Visual kei , abbreviated v-kei , is a category of Japanese musicians that have a strong focus on extravagant stage costumes that originated in Japan during the early 1980s. Koji Dejima of Bounce wrote that visual kei is not a specific sound, but rather it "revolves around the creation of a band's unique worldview and/or stylistic beauty through visual expressions in the form of makeup and fashion". While visual kei bands can be of any music genre, it is generally associated with glam rock, punk rock, and heavy metal.