E1 Learning's In and Out [Product Contents] In and Out Lesson: 9 CDs with Japanese and English, 9 CDs with English only [Features of the In & Out Learning Materials] In & Out is a listening comprehension material covering a wide range of topics, including everyday conversation, overseas travel, business situations, and homestays. This material was created by Marcus, a native speaker, who wanted learners to acquire truly usable and understandable English, rather than just learning difficult English. Natural English is used in short lessons tailored to various situations. Many other companies' materials have long lessons that end with just listening, but In & Out has short lessons of about 3-4 minutes each, and they are easy to learn because they are composed only of target conversations. The content is not the boring English of textbooks, but only natural English conversations that native speakers actually use. Rather than sticking to one lesson per situation, many realistic situations are adopted, so you can actually speak natural English in any situation. I purchased this 10 years ago and briefly looked through the text after opening the box. I only listened to CD 1 a few times (so I have confirmed that only CD 1 works. It can be listened to without any problems. Please note that I have not checked the other discs). There is almost no discoloration, and it is in good condition (the box is slightly discolored, as shown in image 7). Please consider this item if you understand that it is a used item. Please refrain from purchasing if you are sensitive to such things.