"Deep Forest") is the tenth single by Do As Infinity, released on June 27, 2001.

[1] The song is used as the second ending theme for the anime Inuyasha.

[2] The accompanying music video for "Fukai Mori" was filmed in early 2001 at the Glücks Königreich theme park in Hokkaido, Japan.

[3] This song was included in the band's compilation albums Do the Best and Do the A-side.

[4][5] The song was later covered by Eir Aoi in her single Tsubasa.