Uta no Prince Sama Legend Star
A comedy series that brings humor and levity to its premise.
The anime's story will start where the third season left off, at the competition for who will open the Triple S international sporting event. Raging Entertainment's HE★VENS idol group had hijacked the competition between QUARTET NIGHT and ST☆RISH, causing chaos. However, after the QUARTET NIGHT members suggest a certain idea, the three groups aim toward a new stage, with HE★VENS swearing to get their revenge on the other two groups. (Source: ANN)
Plot summary from MyAnimeList. Data and images via Jikan API.