Based on an idol-training mobile game produced by Liber Entertainment and Pony Canyon.

The brand-new voice actor office "AiRBLUE" has no track record or experience. Aspiring voice actors with rich individuality are signed on to the office. They do their best to achieve their dreams, but it's a tough world out there. No matter how much they practice, not everyone will pass the audition.

(Source: Anime News Network)