One Piece Vol. 60 is the fastest selling book in Japan's History and the only book that sold more than two million on its first week. Also, volume 60 holds a manga publishing record in Japan, with 3.4 million copies published in its first printing alone, breaking its own previous records established by volumes 57 and 59 (at 3.0 and 3.2 million copies respectively). In addition to that, it also broke Japan's all time first print publishing record of all books, passing the previous record of 2.9 million copies, held by Harry Potter and the Order of the Phoenix.
Now, One Piece is the highest selling manga series of all time in Japan with over 200 million copies sold, and the fastest manga series to reach sales of 100 million.