The Sailor Moon musicals , commonly referred to as Sera Myu , are a series of live theatre productions based on the Sailor Moon manga by Naoko Takeuchi. The series consists of 31 musicals which have had more than 800 performances since the show opened in the summer of 1993. The first set of musicals, which ran from 1993 to 2005, were produced by Bandai with over 500 performances. The current musicals have been produced by Nelke Planning since 2013.

The Dark Kingdom is a group of fictional characters in the Sailor Moon manga series by Naoko Takeuchi. They are the chief villains of the first story arc in every version of the series, and were first introduced in the first chapter of the manga, "Usagi – Sailor Moon", originally published in Japan's Nakayoshi on 28 December 1991. In the DIC English adaptation, the Dark Kingdom's title was changed to "Negaverse".