The book is "Marketing Principles You Don't Know: Learning from Examples of World-Class Companies." It's a business book by Hikaru Adachi and Tomohiro Doai. Title: Marketing Principles You Don't Know: Learning from Examples of World-Class Companies Stored at home. Authors: Hikaru Adachi, Tomohiro Doai Publisher: Asahi Shimbun Publications ISBN: 9784022516350 Content: This book teaches marketing principles useful for business through real-world examples. Shipped via anonymous Yu-Packet Post.