Endless (Sakanaction song)

"Endless" (Japanese: エンドレス, Hepburn: Endoresu) (Japanese pronunciation: [endoɾesɯ]) is a song by Japanese band Sakanaction. It was the leading promotional track from the band's fifth studio album Documentaly, released on September 28, 2011. Created primarily by the band's vocalist Ichiro Yamaguchi over a period of eight months, the song was written as a record of what it was like to live in 2011. The song was the central composition of Documentaly, affecting the album's track order and composition.

The song received strong radio airplay in Japan around the album's release date in Japan, reaching number eight on the Billboard Japan Hot 100. Critics praised the song as "ambitious", noting the song's progression, fusion of electronic music and rock genres and "symbolic" lyrics.