Setsugetsuka is a song created for the Uta no☆Prince-sama♪ SHINING LIVE mobile game, performed by STARISH and QUARTET NIGHT together.

Three versions of the CD were released, each with a cover depicting a set of characters which corresponded to the three parts of Setsugetsuka. Flowers: Otoya, Ren, Syo, and Ranmaru | Moon: Natsuki, Cecil, Reiji, and Ai | Snow: Masato, Tokiya, and Camus.