"Luminous" (ルミナス, Ruminasu) is a pop song by the Japanese duo and idol unit ClariS, written by Shō Watanabe.

The song was used as the opening theme to the first two Puella Magi Madoka Magica anime films.

Beginning in the G major key, the introduction starts with only piano and adds drums and violin to transition into the first verse in C-sharp minor, followed by the chorus.

After a bridge in G major, the key shifts back to C-sharp minor for the second verse and chorus, which use the same music with different lyrics.

[5][6] In December 2014, "Luminous" was certified gold by the Recording Industry Association of Japan (RIAJ) for having exceeded 100,000 copies shipped in a single year.