Shinken Zemi High School Course Math Materials New, Unused Shinken Zemi Challenge The items in the images are what's for sale. These are workbooks, so they're useful for practice and study. Published in 2018 and 2019. Although unused, please refrain from purchasing if you are concerned about minor details due to home storage. The last image has some writing in it. I will include it if you'd like. Please negotiate the price in the comments. Thank you very much.