These are the six books in the Gakken Junior Champion Course, as shown in the image: Super Science Mystery Ninja Trick Operation You Are a Fortune Teller Detective Trick Operation The Detective Appears Chase That Criminal *No individual sales.* Although I have inspected the items to some extent before listing, please understand that these are books from 50 years ago, so there may be age-related wear and tear, and there may be overlooked writing. Please note that the shipping method may be changed from Rakuraku Mercari Bin to Yu-Yu Mercari Bin, or vice versa. To deliver at a slightly lower price, I will not wrap the box with cushioning materials to increase the size, so please understand. Also, please understand that I cannot guarantee any damage that may occur during shipping after the item has been sent. In addition, the listing price is based on the cost of materials and shipping, and is set to ensure the items can be delivered to you safely. I am afraid that I cannot accept price negotiations, and will block such requests. Please understand that cancellations and returns are not accepted after purchase.