I've used two "Well Done!" stickers. I traced the hiragana chart on page 2, but I erased it with an eraser. I think it's fine. I've written on pages 5-15. I tried to erase some, but the marks still remain (photos 6 and 7). I will erase everything if you purchase it. Pages 16-78 are unused. I will sandwich it with thick paper to prevent folding and package it to prevent water damage. I would be happy if you could use it. Thank you for looking. #Kumon Publishing Editorial Department #Book #Language/Japanese