"Longing" is a ballad by Japanese rock band X Japan and written by Yoshiki. The song has been released in several versions, most notably in two different single variations. The first, "Longing ~Togireta Melody~" , was released as their eleventh single on August 1, 1995 and reached the number 1 spot on the Oricon chart. The second, "Longing ~Setsubou no Yoru~" , is their twelfth released on December 11, 1995 and reached number 5.

Dahlia is the fifth studio album by Japanese rock band X Japan, released on November 4, 1996, by Atlantic Records. It is the band's last album before breaking up the following year, and the last to feature new work by guitarist hide, due to his death two years later. The album is composed largely of ballads, with only a few tracks retaining the band's heavier musical traits seen on previous releases. It topped the Oricon chart and stayed on the chart for only 15 weeks, but managed to sell over half a million copies. Seven, nearly all, of the album's songs were released as singles, most of which also topped the singles chart and sold well.