sigotositeP's first work to feature an Iroha and MEIKO duet. The song was also featured and remastered in sigotositeP's album "SS Tobira no Mukou no Sono Saki e"; with only MEIKO as the vocalist.
According to sigotositeP's description on the song as commented from her mylist, and video description, the song was originally an instrumental song, which sigotositeP later converted into a singable song.
Dead Foresta tells a story of a town deep in darkness. The townsfolk were in misery, and they begged to a girl who could "speak to God" to bring the town happiness. The girl prayed to the God, in a lake filled with lilies and happiness; just as the townsfolk asked. It didn't work, for later the people still distrust each other, steal, and kill.
They asked the girl again to pray to the God, however the girl was no longer pure. The girl later drowned and died, and only her singing voice to the Gods was left of her.