"Fu-tu-re" (ミ•ラ•イ Mi-ra-i?) is one of the ending theme songs for the Japanese version of Sonic X. It was used for episodes 1-13. During the show's original run, it was used from April 6, 2003 to June 29, 2003. An instrumental version of the song is played in the ending credits of the French dub of Sonic X. In Korean dub, it was used for all episodes. However, ending video of this song was maintain of Episode 1 for 39 episodes(from Episode 1 to 39).