Purchased from Waseda Academy for the 2025 high school entrance exams. No writing inside. Key Work, back cover, and answer key have a fold on the bottom right of the cover. Regular test preparation has a fold on the bottom right. I am a novice, so there may be oversights. Please refrain from purchasing if you are sensitive to items stored at home. #HighSchoolEntranceExam #JuniorHighMathRegularTestPrep #WasedaKeioEntranceExam #MathTextbook #KeyWork #WasedaAcademy #GradePointAveragePrep #RegularTestPrep