Although it was unable to chart on Japan's Oricon Singles Chart because of their restriction of digital sales at the time, it did peak at number eight on Billboard's Japan Hot 100 chart. "Contrail" receive positive reviews from music critics, many who highlighted it as one of the album's best tracks, and complimented the production and songwriting. The single premiered on as the lead single from the album, and her second digital-only release. A self-empowerment anthem, the title derives from the literal term, and is delivered as a metaphor for confidence and hope. Musically, "Contrail" is a dance number that includes instrumentation of synthesizers, keyboards and a drum machine.
The track was written, composed, arranged and produced entirely by long-time collaborator Nao'ymt, and recorded at Daimonion Studios in Shibuya, Tokyo.
The singer was approached by the Tokyo Broadcasting System team to record the official theme song for their television series Flying Public Relations Office, which resulted into the process of "Contrail". " Contrail" is a song by Japanese recording artist Namie Amuro, taken from her eleventh studio and second Japanese– English bilingual album Feel (2013).