"Anata Shika Inai Desho" was written by Gorō Matsui and composed by Tsugutoshi Gotō.

Lyrically, Matsui describes a protagonist confidently professing her love and vowing to stand by her companion, whom she refers to as "the only one".

The song kicks off with a guitar solo and incorporates a soulful brass section while also featuring a backing choir harmonizing throughout the track.

[1] Similarly to "Koe o Kikasete", also penned by Matsui and Gotō, the song is noted for its distinctively Western sound and southern gospel influences.

All lyrics are written by Gorō Matsui; all music is composed by Tsugutoshi Gotō^ Shipments figures based on certification alone.