- Title: The Ōnin War: An Invitation to Medieval Japan - Author: Yuichi Goza - Shinsho (New Book Series) Thank you for viewing. Purchased at a used bookstore. I gave up reading it partway through. It is in a condition appropriate for its age. There is yellowing, creasing, and scuffing. Please refrain from purchasing if you are averse to used items. To reduce shipping costs, the item will be simply packaged.