Desert Bluebird is a song released on July 7, 2010 in the EXIT TUNES' Supernova 3 album and later uploaded with a PV by Akuno-P two days later. The story follows two siblings as they hunt for a mystical blue bird. While ostensibly set in Lucifenia, it bears no apparent connection to the Evillious Chronicles.
In the distant future where civilization is all but wiped out, a brother and sister are looking for a bluebird, sure they can weather any disasters together. They meet an old woman who tells them of a bluebird that has the power to fulfill any wish. If found, the bluebird could save the world. They set off, "packing their car full of wishes" in search of the bluebird. After a long journey, they find it inside a Lucifenian state-run factory, perilous to humans due to high radiation. While the brother is too timid to go inside, the girl "packs her heart full of courage" and enters the building in his stead.
She then retrieves the bluebird, only to suffer and die from the radiation. Discovering this, the brother begs the bluebird to restore his sister, and the bluebird disappears as the girl wakes up again. The two walk ahead and find themselves near a blue ocean at the end of the world. It is there where civilization is recreated by the hands of its inhabitants. At the end of the PV, on the screen is shown,"The Desert Bluebird is a miracle."
The song uses Kagamine Len's vocals for its duration along with Kagamine Rin utilized for backup. Synthesizers, piano, violin, electric guitar, and drums are used for the instrumental.
The song's opening instrumentals play until the first verse at 0.35, ending at 0.55 for the pre-chorus, with the song's chorus starting at 1.13 and ending at 1.34 for a musical break. At 1.44, the second verse begins, preceding the second pre-chorus at 2.04. The second chorus begins at 2.22, and is followed by the third verse at 2.45. At 3.02, the bridge begins, which then shifts to an instrumental break. By 3.37, the bridge resumes, followed by a final verse 3.49. At 4.10, the final chorus is sung until 4.29. The opening instrumental plays until the song's end.
In French folklore, the bluebird represents enduring happiness and is the origin of the phrase, "bluebird of happiness"; Lucifenia, the country the song is set in, is inspired by France.
In Native American folklore, the Sun's firstborn son was named Bluebird and the animal was believed to be a spirit associated with the rising sun, possibly alluding to the sun over the ocean toward the song's end.
The song's plot also may be inspired by the play The Blue Bird(L'Oisea bleu) by Maurice Maeterlinck, telling the story of a girl, Mytyl, and her brother, Tyltyl, who try finding the "blue bird of happiness."