Pretty Rhythm: Aurora Dream Pretty Rhythm: Rainbow Live Episode 7 Episode 7 ( Air Date 2013-05-18 ) Genre Animation category. Overview "Prism Stars are performers on the new popular ice show, Prism Show. They are superidols whose techniques, singing and fashion sense are a cut above all others. Aira and Rizumu are two Prism Stars whose goal is to become the best, the Prism Queen; however, the road to success is bumpy.".