Especially since the Showa era, the "library" has gradually evolved into a small format publishing form with low price, easy appearance and popularization. So up to now, in most occasions when "library" is mentioned, it refers to this kind of little book.
The publications called libraries in Japan are generally paperback, A6 size and 105mm× 148mm format. This form is also called "library book".
Typical works published in the form of library books are mostly books published in large forms such as hardcover books, which have been changed to this form for the purpose of popularization.
However, in recent years, focusing on the advantages of low price of libraries, there are also single-line books published directly in libraries. Especially light novels and other literary works (ジャンル), self-inspired books, functional novels and so on. Books of a relaxed nature aimed at young people or sold outside bookstores such as convenience stores and station sales departments.
Empty the library, Beize Library, Shu Dong Library, Shen Ling Library, Classical Library, Electric Shock Library and MF Library.