This set was originally available only in Japan in July 2001 with one card issued per customer for each purchase of snack foods at 7-Eleven Japan outlets. The cards are printed on clear plastic, often referred to as "Crystal Cards" and printing is mostly in Japanese but with English titles.
Very difficult to find!
Orders of 5 cards or less will be shipped individually top-loaded and sleeved. Lots & sets larger than 5 cards will be sent securely in a small box.