Japan Pen Club E-books/日本ペンクラブ電子文藝館
The Japan P.E.N. Club Digital Library mainly contains copyrighted literary works included with the permission of the copyright holders of each work, either the authors themselves or the copyright heirs if the author is deceased.
NDL Digital Collections English / Japanese Full-text out-of-copyright Japanese books.
Full-text of the Japanese classical literature by the National Diet Library. Can search citations.