This is the book "DIE WITH ZERO: Getting All You Can from Your Money and Life" by Bill Perkins, translated by Osamu Kojima. It introduces nine essential rules for maximizing "money" and "time" in a limited life. It's a bestseller that has sold over 660,000 copies and has been praised by many readers as "life-changing." It's a beautiful copy, purchased just this December. This book changed my life! Please read it!