This is a complete set of the "Secret Gadget Encyclopedia," a special appendix included at the end of "Doraemon's Crafting Volume," a guide to enjoying crafts with Doraemon. - Title: Doraemon Crafting Appendix - Contents: Crafting procedures and explanations - Character: Doraemon - Target age: Elementary and junior high school students - Training: Thinking skills training These are already made. (See photos) Please purchase only if you understand.