No comments needed, immediate purchase is welcome. This is "English Pronunciation Tsubo Drill: If you can pronounce it, you can hear English clearly!" The CD has been opened, but its functionality hasn't been confirmed. There are no writings or underlines, but there are wrinkles on the cover, so please refrain from purchasing if you are sensitive to this or if you are looking for a perfect item. I will ship it after taking measures to prevent water damage. I bought it to study, but I've started decluttering language textbooks that I don't use. #Decluttering and becoming a minimalist, selling language textbooks