15 Doors is the second studio album by Japanese pop duo Moumoon.

The third single is the song "Aoi Tsuki to Ambivalence na Ai" (Japanese: 青い月とアンビバレンスな愛), released on November 25, 2009.

The fifth and last single are the songs "Moonlight / Sky High / YAY", released on November 10, 2010.

[6] "Moonlight" was used as theme song for Aeon's "Full Moon Rose" TV advertisement.

All lyrics are written by Yuka; all music is composed by Kousuke Masaki