Yumeko Sakurai

She is an idol and the rival of Ryo who chases after her dream no matter what it takes. She is described as an extremely talented idol until it was revealed that she cheated her way to the top giving other idols candy that clogs the vocal chords or sabotaging the stage so the other contestants screw up. After Ryo convinces her to stop she reveals that her dream was to appear as a guest on Takedas show Old Whistle. Yumeko is also considered an tsundere type character even though as rivals she hangs out with Ryo frequently to talk about their upcoming auditions.