【Kadokawa Manga Study Series: World History】 ・20 volumes ・Supplementary volume: Comprehensive Regional History A total of 21 books. Supervised by Tadashi Haneda, published by KADOKAWA Softcover books. I purchased these new around 2022 for my child's entrance exams, but they showed no interest and didn't read them. I ended up reading them myself about twice. The condition is very good, like new. They have been stored in a glass-doored bookshelf. Please note that it may take 5-6 days to ship due to work commitments.