This is a set of 6 books from the Great Survival Series. It's a combined sale of 2 books purchased new and 4 purchased used. The collection focuses on nature, adventure, and history (e.g., Jungle Survival / Ancient Ruins Survival). I bought these hoping my child would enjoy learning as an introduction to studying for junior high school entrance exams. I purchased them one by one, checking the test scope of the cram school. 【Condition】 ・2 books purchased new: Relatively good condition. ・4 books purchased used: My child has read these repeatedly, so there is some wear and tear on the cover and spine, but the inside is relatively clean and there is no problem with reading. ※Regarding used items, there may be oversights due to amateur inspection. Please purchase only if you understand this. I would appreciate it if you could purchase them as a set ☺️ (I am not considering selling them individually at this time)