This is a set of Z-Kai Every Day Advanced Grade 6 textbooks for August to October, covering four subjects. The August issue has some writing in it. The September and October issues are unused and have no writing. I opened them for the first time to list them. Since they are used in conjunction with a tablet, there are parts without answers, and this is just the textbook. I personally think the condition is good, but I hope someone who understands that these are items stored at home will use them, and someone who wants to see what kind of learning content they offer.