Do Vocaloids Dream of Doomsday Birds? (ボーカロイドは終末鳥の夢を見るか?) is a series of 4 songs made by sasakure.UK. The series is about the destruction of Earth and humanity due to a war that broke out.
A CD with the same title was released by Sasakure-P with the four song in it plus an extra song "*Sayonara, World's End" which is a different version of the fourth song "*Hello, Planet." Miku feels sad and says goodbye to everything in the world instead of saying hello to it.
Songs in the series: