King of Prism by Pretty Rhythm

Synopsis

Over The Rainbow has just made a successful debut, leading to a surge in new students enrolling at Edel Rose. Hiro and the team start preparing for the Prism King Cup, a major competition that occurs once every four years. But a new rival group called "Schwarz Rose" suddenly appears on the scene. The question remains: who will become the Prism King—the one who can win the hearts of girls the most?