Hiroyuki Collection Set This is a set of books summarizing the way of thinking, discussion techniques, and logical thinking methods of Mr. Hiroyuki. By learning his unique perspectives and practical thinking methods, you can improve your judgment and discussion skills in daily life and work. Recommended points • Efficiently learn logical thinking and conversation tips • Ideal for those who want to develop judgment in society, work, and relationships • Easy to read even for beginners, with content that can be put into practice in real life About the condition • Used items, so there are slight signs of use on the pages and cover • No noticeable stains, folds, or tears • Writing and underlining have been checked, but there may be rare oversights • Usable for normal reading About shipping • Free shipping • Anonymous shipping available • Shipped via Yu-Yu Mercari or Rakuraku Mercari • Will be carefully packaged and shipped This set is recommended for those who want to think logically and improve their judgment in discussions and work.