This is a complete set of textbooks and problem books (36 books total) for the 2026 graduate co-op civil servant course. Purchased around spring 2024, most of them are unused because I changed my career path. There are a few notes written in the numerical reasoning and constitutional law reference books, but the other reference books haven't been opened even once. Immediate purchase is welcome. Individual sales or the purchase of only unused items are also possible. The price when I bought all of these was about 80,000 yen, so I'm not sure about the market price and have set this price, but feel free to negotiate. If you have any questions or requests, please feel free to comment. Also, I will accommodate any requests for additional images.