I kept this book on my bookshelf after I finished reading it once. It's practically in new condition. Personal opinion: This seems to be a standard book for sole proprietors who want to learn about blue-form tax returns. The key points are explained clearly, following the flow of the process. It's a good starting point to try it out for the first time while looking at this book. ※This book is the 5th revised edition. The 6th edition is currently on sale in bookstores, but I think the revisions are only minor updates to reflect slight legal changes. Title: Freelance/Sole Proprietor's Blue-Form Tax Return Start Book, 5th Revised Edition Author: Toshinori Takahashi / Business Train Publisher: Diamond Inc. Price: ¥1650 (tax included) #ToshinoriTakahashi #Takahashi_Toshinori #BusinessTrain #Business_Train #book #society/economy/finance