One Week Friends
 One Week Friends (一週間フレンズ。 Isshūkan Furenzu.) is a manga series by Matcha Hazuki serialized in Square Enix's Gangan Joker from January 21 2012. It was first published as a one-shot manga in Gangan Joker's September 2011 issue. It has been collected in five tankōbon volumes as of March 2014. An anime television series adaptation by Brain's Base began airing on April 6 2014. Sentai Filmworks has licensed the rights to the show.