Manga launched in March 2016

The June issue of Kadokawa's Dengeki G's Comic magazine revealed on Friday that Yūki Dōmoto will end the manga adaptation of writer Wataru Watari (My Youth Romantic Comedy Is Wrong, As I Expected novel series author) and artist QP:flapper's Girlish Number project in the magazine's next issue on May 30.

Sentai Filmworks licensed the television anime adaptation, and it describes the series:

College student Chitose Karasuma is determined not to do boring things as she enters the adult world. To this end, this bad-mannered beauty barges into a facility that trains would-be voice actors and actresses, somehow landing a job at “Number One Produce,” a seiyu agency managed by her older brother, Gojo. In Chitose's mind, she's poised for greatness, but finds herself at a loss when she continues to only get minor roles. As she clashes with other girls in the agency, including a cunning airhead and a girl with a Kansai accent, Chitose is about to learn that there's more to succeeding in this competitive industry than she imagined.

Dōmoto launched the manga in Dengeki G's Comic in March 2016. Kadokawa published the manga's second compiled book volume in December.

The project's original television anime premiered in Japan in October. Crunchyroll, The Anime Network service, and Viewster all streamed the series. The project also spawned the Girlish Number Shura manga by Shin Ikezawa (Charlotte) and Yū Tsurusaki (Charlotte), which is also inspiring an anime.