This is a set of the Ironwood Kai (Tetsuryokukai) High School 3rd Year English University of Tokyo English Problem Collection, consisting of the problem section and the answer/explanation section. It contains problems and explanations from the years 1971 to 2023 (approximately 50 years' worth). The explanations are quite extensive and detailed. Since it was used with copies, it is generally clean, but there are some instances of year notations written in the corners of the pages. There are also some minor stains and scratches. Please be aware of this. Price negotiations are possible, and discounts are also available for combined purchases with other items I have listed.