うたの☆プリンスさまっ♪
Quartet Night (stylized as QUARTET NIGHT) is a veteran idol group from STARISH's company who first appears in the 2013 game "Uta no Prince-sama: All Star" and the anime's second season, "Uta no Prince-sama: Maji Love 2000%". The group acts as mentors to STARISH. The members are represented by the colors dark red for Ranmaru, lilac for Ai, emerald green for Reiji, and light blue for Camus.