I have read it a few times and stored it in a dark place. There are no markings. As shown in the 4th and 5th photos, there are some pages with stains from being in a bag. - Title: Grammar for a Hundred Million People (Ichiyokunin no Eibunpou) - Author: Yasuto Ohnishi - Supervisor: Paul McVay - Publisher: Tokyo Shoseki - Content: A grammar book for English language learning Thank you for viewing. Please consider this item with the understanding that it is a used product.