"Watanabe's Thorough English Grammar: From Basics to College Entrance Exams, Volumes 1 & 2" Katsuhiko Watanabe Price: ¥1300 This is a two-volume set. Volume 1 has been used a little, with about 70 pages showing signs of use. There are some markings with a highlighter, but it's in good condition. I've included a picture of a page with highlighter marks in the third photo. Volume 2 has never been used. #KatsuhikoWatanabe #Katsuhiko_Watanabe #Book #English #EnglishWorkbook