Chitose Karasuma, a college student, is resolved not to be a bore when she enters the adult world. To that purpose, this bad-tempered beauty storms into a training center for aspiring voice actors and actresses, eventually getting a position at "Number One Produce," a seiyuu agency run by her elder brother, Gojou. Chitose believes she is destined for greatness, but she is frustrated by the fact that she continues to be cast in lesser roles. Chitose is going to discover that there's more to success in this cutthroat sector than she expected when she conflicts with other females in the agency, including a crafty airhead and a girl with a Kansai accent.