It was originally uploaded onto Niconico on November 1, 2010 by niki. It has since gained more than 150,000 views and is one of Lily's more well-known songs. The lyrics are open to interpretation, since they are vague, but a common theory is that the song is about a relationship gone sour, a girl who was raped by her former lover and became pregnant as a result; the girl then has an abortion and commits suicide from the guilt.