This book explains the new era's principles in self-improvement. I purchased this new book and have only read it once. It is clean with no markings or writing. There is a slight crease on the bottom left of the back cover (see photo 5). Please understand that this item has been stored at home. - Title: Mugen no Chikara (Power of the Source) - Author: Jiei Shimizu - Genre: Self-Improvement - ISBN: 9789884282391 - Number of pages: Approximately 200 pages Thank you for looking.