Happy Birthday, my holy day

“Happy Birthday, my holy day” is a song by Ayana Taketatsu used as the second ending theme for MM! (えむえむっ!), the 2010 anime produced by Xebec. It was released as a single on November 24, 2010.

The song was composed by Elements Garden and uses a bright J-pop style with upbeat melodies and catchy hooks. As an ending theme, it closes the series with a light pop sound typical of many anime theme songs.