There are writings (there are circles and crosses next to each question). I will erase them as carefully as possible before shipping. The outer cover of the Important Problem Collection has signs of use. The inside is clean. If you have any questions, please comment! (First come, first served.) Available for individual sale. Fukuma's Inorganic Chemistry: 1000 yen Kamata's Organic Chemistry: 700 yen Kamata's Theoretical Chemistry: 750 yen Kimeru Chemistry Basics: 1100 yen The Universe's Best (Organic): 1200 yen The Universe's Best (Inorganic): 1200 yen Important Problem Collection: 450 yen Chemistry Textbook: 600 yen Short-Term Conquest Chemistry: 900 yen Common Test Chemistry Past Papers 2024: 700 yen