Original sentence: Volume 1   (released February 7 2006; ISBN 1-59816-221-7).Volume 1   (released July 2002; ISBN 4-7580-5002-3).Volume 2   (released December 26 2002; ISBN 4-7580-5011-2).Volume 2   (released June 13 2006; ISBN 1-59816-222-5).Volume 3   (released June 25 2003; ISBN 4-7580-5034-1).Volume 3   (released October 10 2006; ISBN 1-59816-223-3).Volume 4   (released February 13 2007; ISBN 1-59816-224-0).Volume 4   (released June 25 2004; ISBN 4-7580-5077-5).Volume 5   (released February 25 2005; ISBN 4-7580-5120-8).Volume 5   (released May 8 2007; ISBN 1-59816-225-7).Volume 6   (released August 7 2007; ISBN 1-59816-864-8).Volume 6   (released December 24 2005; ISBN 4-7580-5198-4).Volume 7   (released November 13 2006; ISBN 1-4278-0457-5).Volume 7   (released November 13 2007; ISBN 1-4278-0457-5).Volume 8   (released February 25 2008; ISBN 4-7580-5329-7).Volume 8   (released September 16 2008; ISBN 1-4278-1302-7).Volumes released in Japan.Volumes released in the U