Hitori Tokkun 61 [Conservation of Quantity] This item was given to me by an acquaintance. Pages 1-5 had writing on them, which I have covered with correction fluid. There were no issues when I copied and used it. There is no writing on page 6 onwards. There are folds, tears, and stains on the back cover. In addition, there may be other minor imperfections that I have overlooked, so please purchase only if you understand that this is a used item!