A book set for learning thinking methods and communication skills. - The Thinking of Konosuke Matsushita (619 yen) - Kūkai: Words to Create an Unbreakable Mind (571 yen) - The Amazing Method to Speed Up Your Thinking (571 yen) - The Book to Build Your Speaking Power (476 yen) This is a set of 4 books. Please understand that these are stored at home, and those who are overly sensitive should refrain from purchasing. *I am also selling other items, so if you wish, I can change the books and negotiate the price. Please comment if you are interested. ▪️Notes: ※Cancellations after purchase are not accepted to prevent swapping, use, trying on, or other buyer-related issues. ※Even during negotiations, the item will be sold to the first person who purchases it. ※Please refrain from purchasing USED items if you are particularly sensitive. ※Please also check my profile.