I haven't written any notes in pen, but there are check marks in pencil. I erased them as much as possible, but there might be some remaining. Please consider this a used item. "Hiroshi Deguchi's Japanese Logic Training Elementary School Third Grade: Basic Software to Develop All Academic Abilities, Logic Engine Jr." Mastery Edition, Applied Edition, 3-book set Hiroshi Deguchi Price: ¥1000 + tax x 3 Thank you for looking.