I purchased this as a textbook for an English conversation class, but I ended up using a different textbook without using this one much, so I am selling it. It is in English, and there is no Japanese notation. It seems to be mainly for elementary school students, but it is stated that it is suitable for all age groups learning English. - Title: OUR WORLD 4 - Publisher: National Geographic - Accessories: None There was a CD, but it was not included at the time of purchase. - Language: American English - Contents: English learning textbook - ISBN: 978-1-305-52203-5 I can ship it immediately.