"Eternally" is a song by Japanese musician Hikaru Utada, from their 2001 album Distance.
[1] It was released as a digital single on October 31, 2008,[2] and eventually released onto CD in March 2009, on an EMI compilation album I: Zutto, Zutto, Aishiteru (i(アイ)~ずっと、ずっと、愛してる~).
[3] Innocent Love director Toshiyuki Nakano originally decided that Utada's voice would suit the themes of the drama well.
[1] The song is a R&B ballad featuring an arrangement of strings, background percussion and guitar.
[1] The new version is very similar in structure to the original, however with more prominent strings during the chorus.