Also known as: 桜井夢子
Yumeko Sakurai is an idol and the rival of Akizuki Ryo's who chases after her dream no matter what it takes. She appears in Idolmaster Dearly Stars.
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. She eventually stops sabotaging other idols after Ryo convinces her not to.
Yumeko is also considered a Tsundere type character, since she hangs out with Ryo frequently despite their rivalry, and even develops a crush on Ryo after finding out that he's a boy.