College student Chitose Karasuma is determined to avoid doing anything boring as she steps into the adult world. To that end, this ill-mannered beauty forces her way into a facility that trains aspiring voice actors and actresses, somehow securing a position at "Number One Produce," a seiyuu agency run by her older brother, Gojou. In Chitose's mind, she is poised for greatness, but she finds herself at a loss when she continues to receive only 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 is more to succeeding in this competitive industry than she imagined.