This is all the textbooks used from Yotsuya Otsuka from February of 5th grade to early July of 6th grade. There are 18 books in total, with one book (Science) having a folded cover. Photos are included. There are no names written, no pen markings, and no highlighting. Math: 4 books (Math Textbook, Math Answers and Explanations, Practice Problems (with answers), Calculation (with answers)) Other than that, no noticeable stains were found. Japanese: 6 books (Japanese Textbook, Japanese Answers and Explanations, Practice Problems, Practice Problem Answers and Explanations, Kanji and Vocabulary, Kanji and Vocabulary Answers) There is a fold at the bottom of the Japanese textbook, and a slight stain on Kanji and Vocabulary, photos are included. Other than that, no noticeable stains were found. Social Studies: 4 books (Social Studies Textbook, Social Studies Answers and Explanations, Practice Problems, Practice Problem Answers and Explanations) There is a slight fold at the bottom of the Social Studies textbook, photos are included. No stains were found. Science: 4 books (Science Textbook, Science Answers and Explanations, Practice Problems, Practice Problem Answers and Explanations) The science book has a folded front page. Only one Science textbook has the bottom few centimeters wet and warped, but the contents are clean. On the official website, each book costs ¥1320 + shipping. [Overview] The learning textbooks for 6th graders from Yotsuya Otsuka cover each subject of Science, Math, Social Studies, and Japanese. The content of each subject has a visually enjoyable design with colorful covers featuring animal illustrations. Thank you for viewing.