Brain training book specializing in dementia prevention, enjoyable with one page a day. - Title: Brain Activity Drill 100, One Page a Day - Publisher: TJ MOOK - Number of pages: 38 types in total - Authors: Hiroyuki Konno, Seiji Shiota, Daisuke Ito - Purpose: Dementia prevention - ISBN: 978-4-8002-8624-6 I read it once and stored it. There are no writings, scratches, or cutouts, and it's clean. Please check the photos for a slight curl on the bottom left. Thank you for looking.