Yotsuya Otsuka Yosyu Series Japanese Language Arts Grade 5 Lower with Explanations Calculation Diary Arithmetic Grade 6 Upper Answers and Explanations Combined Yosyu Series Grade 5 Lower, perfect for Japanese language arts study, with explanations. - Series Name: Yosyu Series - Subject: Japanese Language Arts - Grade: 5 Lower - Publisher: Yotsuya Otsuka - Explanation: With explanations - Price: 2200 yen Both the problem book and the answer key have folds and damage. I quickly looked inside and it seems there are no writings, and it looks relatively clean. I erased the name written in pencil in the name section on the back, but some remains. This is a used book that a child used, so it's a bargain for those who don't mind. Thank you for viewing.