Kotomiya Kazumi (琴宮和美,Kotomiya Kazumi) The main protagonist of the series. Kazumi is an extremely introverted and rather quiet girl who never gives up. Despite being shy, she holds a lot of confidence and passion within her heart. She also has a kind heart and believes that no one could be bad. Her idol color is purple and her fashion element is lovely.
Himekawa Yozora (姫川夜空,Himekawa Yozora) A rich and snobby girl in Kazumi's grade, Yozora is the captain of her school's gym and ballet club. She is known throughout the school for her elegant but a little selfish nature. However, she wants to be less popular and more outcasted like Kazumi. Her idol color is blue and her fashion element is feminine.
Kizora Miyuki (黄空みゆき,Kizora Miyuki) An outgoing and always cheerful girl, Miyuki is energetic and very passionate. She is also a famous Prism Star under the name of Himawari (ひまわり,Himawari) however, people have no idea that Miyuki and Himawari are the same person due to Miyuki taking on a different appearance before performing. Her idol color is yellow and her fashion element is pop.
Hoshizawa Kirara (星澤きらら,Hoshizawa Kirara) - A girl who believes she is better than everyone else and daughter of Ayako. She also believes she is above those like Kazumi and is an employee of her mother's store. Her idol color is orange and her fashion element is sexy.