Girlfriend (♪)

In the anime's story, the group "nonet" ends up working on a play with the group "Ootori" from the Ootori Song Academy. The play is Cinderella, but with a special twist. Momoko Asahina will play Cinerella, Miyabi Kunishiro will play the prince, and Kokomi Shina will play an unexpected role.
(Source: Anime News Network)