These two books are being sold as a set. By roughly learning the areas covered in the target test format with book ①, and solving practice problems with book ②, I was able to prepare for most companies. I studied only with these two books, and I passed all the major companies' SPI tests. (For your reference) I purchased them in September 2025 and have looked through them once, but there are no markings or writings, and they are in very clean condition. ① "This is the Real SPI3! 2027 Edition [Corresponding to the 3 Main Methods: Test Center, Paper Test, and Web Testing]" SPI Note Association / SPI Note Association Price: ¥1500 ② "2027 Edition Major & Popular Companies Breakthrough SPI3 Problem Collection <<Complete Edition>>" SPI3 Countermeasures Research Institute Price: ¥1400 #SPI3CountermeasuresResearchInstitute #SPINoteAssociation #SPINoteAssociation #Books #Society/General