These are the teaching materials I used to purchase monthly when I was attending the class. Usagi Class (1-2 years old) It seems that the CD format has been discontinued, and now listening is done through streaming exclusively for those attending the class. ※ From the official website "We will introduce a service to stream the audio of the 'Brain Development CD' on 'Platinum School'. ※ Sales of the 'Brain Development CD' will end at the end of March 2023." How about trying it for home study? There are no writings in the text. Please note that returns, exchanges, and refunds are not possible for items that can be duplicated. Thank you for your understanding. Please understand that these are used items, inspected by an amateur, and stored at home before making a purchase. Popular keywords: Shichida Method