 After the "Ecobag" sold out, the label released the "Ecoblock" or "Bird Block" in April 2012, with just the original 13 albums and a T-shirt.In 2009, Important announced that an LP named "Jigokuhen" would be released to celebrate the completion of the series.Originally scheduled for the first anniversary of the completion of the original series (January 2011), but it was delayed until March.