Thank you for viewing. This is a set of 5 books by Masakazu Kobayashi. "So-Wa-Ka" Law: The "Practical Equation" for Shining Your Life Another Theory of Happiness Enlightenment is Enough in 3 Seconds The Law of Connections The 1% of People Who Are 100% Happy There are minor scratches on the covers and small stains in some places, but the contents are relatively clean, I think. Please check the photos for the current condition. There is a single page marked with a highlighter in "So-Wa-Ka" Law. There are no other writings (please forgive any oversight). Instant purchase is OK. Please note that the person who purchases immediately will be given priority, even if negotiations are in progress. If you have any concerns about the condition of the books, please leave a comment. *Please refrain from purchasing if you are overly concerned about the condition, as these are used items. Please purchase only if you understand. #MasakazuKobayashi #Kobayashi_Masakazu #Books #Society/General