Kageki Shojo!!

Ever since she was a little girl, Sarasa has wanted to play the role of Oscar as part of the Kouka Acting Troupe, an all-female acting troupe similar to the Takarazuka Revue. But before she can do that, she has to attend two years at the Kouka School of Musical and Theatrical Arts. As Sarasa practices singing, dancing, and acting, she grows closer to the other girls in her year, including her roommate, the stoic former J-idol, Ai. Though Sarasa is great at making friends, her outspoken nature and grand ambitions earn her lots of enemies as well.

Synopsis from Anime News Network