おかあさん (Okaasan)

Background
"No, my mother cannot twist her neck around."

- Author's comment

In the song, a girl says that her mother is coming and at the end of the song, she says that she "already got her". The true meaning of the song is unknown due to its vagueness.

In -rebirth- however, it is revealed though a hidden message, that the song itself is supossed to be the girl's memory of when she died. The message ends with her saying "I'm right behind you now."