This is a complete set of 20 volumes. * All supplements are unopened and included. * All fold-in supplements, such as stickers, are also included and unremoved. I purchased all of them as first editions. I tried my best not to crease the pages or open them too wide when reading, so the contents are in relatively good condition. There is no problem with reading them, but they are used items, so I would appreciate it if you could purchase them with understanding. Thank you.