Set of Akahon (red books) for the University of Electro-Communications 2017, 2020, 2023 A set of 3 books. Problems from 2014 to 2022 are included, allowing those considering taking the University of Electro-Communications entrance exam to prepare with 9 years' worth of past questions. No plans to sell individually. Please refer to the images for writing and stains. If you would like to know more, please comment and I will reply. Basically, for books with writing, I have included the section with the most writing in each book. For books without individual images, I have not been able to fully confirm, but I did not see any writing. Please forgive any oversight regarding writing. Please refrain from purchasing if you are overly concerned about condition. I will disinfect the book surfaces with alcohol before shipping. Thank you.