The comedy story follows Mai and Kurumi — two polar opposites who act friendly onstage as the hit singing duo "Star Berry," but bicker offstage. What Mai really wants to become is a rock singer, but the easily flustered Kurumi would rather sing idol songs.
Berry Dynamite is a completed manga by Nakahara Aya, first published in 2009. It blends romance, comedy and drama. You can read all 12 available chapters of Berry Dynamite online for free on MangaPulse; the newest is Chapter 11, added 2021-10-02. The series is finished, so you can read it from start to end in one go.