King of Prism by Pretty Rhythm

The anime follows the students of Edel Rose, a school dedicated to training Prism Stars, performers who captivate audiences with their singing, dancing, and dazzling Prism Jumps. Inspired by the debut success of the boy band Over The Rainbow, more students enroll, all aiming to compete in the prestigious Prism King Cup. This competition, held only once every four years, tests the skills and charisma of the performers, with the goal of becoming the ultimate Prism King and winning the hearts of girls. However, their aspirations are challenged by the arrival of Schwarz Rose, a rival group determined to claim the title for themselves. The series focuses on the training, rivalries, and performances as the students of Edel Rose strive to achieve their dreams.