An additional chapter, first published as a bonus with the September 2008 issue of Betsuma, and an afterword by Yoko Kamio were included in the fifth and final volume of this edition.
Inclusion was made in the fifth and final volume of this edition: an additional chapter that had been originally published as a bonus with the September 2008 issue of Betsuma, along with an afterword by Yoko Kamio.