Circles of Life / Summer Time!!!

 is the 15th single released by AZU. It was released on August 28, 2013, and peaked at #143 on the Oricon single chart. Circles of Life was used as the theme song for season 9 of the drama Kyoto Chiken no Onna.

Tracklist

 * 1) Circles of Life
 * 2) Summer Time!!!
 * 3) Circles of Life (Instrumental)
 * 4) Summer Time!!! (Instrumental)