It was released as a double A-side single alongside "Yukigasa" by Pony Canyon on November 5, 2008.

Her 1998 single, "Kirara", and its coupling song, "In the Sky", received a similar treatment, but was never officially released as such.

"Night Wing" was written and composed by Miyuki Nakajima,[3] and arranged by Ichizō Seo.

[5] Lyrically, the song describes a protagonist metaphorically "spreading her heart-shaped wings and soaring through a windy sky" and ambiguously pondering about her contradictory actions and mixed feelings.

[7] "Night Wing" debuted at number 75 on the Oricon Singles Chart, with 1,000 copies sold.