The Idolmaster is a popular Japanese multimedia franchise created by Bandai Namco Entertainment, focusing on the production and management of aspiring idols in the entertainment industry. The franchise began as an arcade game in 2005, where players take on the role of a producer managing a group of female idols, helping them achieve success in their careers through training, performances, and building their fan base. The gameplay revolves around rhythm-based music challenges, decision-making, and character interactions, allowing players to influence the idols' paths to stardom. Over the years, The Idolmaster has expanded to include various video games, anime series, manga, music CDs, and live concerts, all contributing to its rich and vibrant world.

In addition to the original game, The Idolmaster has diversified into several sub-series, each featuring different groups of idols and production agencies. Notable sub-series include Cinderella Girls, Million Live!, Shiny Colors, and SideM, which introduce new characters and storylines while maintaining the core theme of idol management and development. These expansions have allowed the franchise to grow a dedicated fan base both in Japan and internationally. With its blend of engaging gameplay, memorable characters, and a dynamic music catalog, The Idolmaster has become a beloved cultural phenomenon in the realm of anime and video game fandoms.