The manga centers on Megumi Ayase, an idol singer at Mami's talent agency Parthenon Productions. Megumi is the top star of Parthenon Productions, and she... more>> is rude to Mami after she joins the agency. Megumi is jealous of Mami and sees herself as Mami's rival. The story follows Megumi's idol life as she tries to be a good senior at work to Mami. <<less