読書尚友 Free (青空文庫ビューア) is a versatile e-book viewer designed specifically for Japanese literature enthusiasts. This free application allows users to access and read over 10,000 works published in Aozora Bunko, supporting various file formats such as text, HTML, ePub, and more. Key features include automatic character code detection, a customizable bookshelf, and comprehensive search options, making it easy to find and organize your favorite titles.

The app also offers advanced functionalities such as bookmarks, local file display, and compatibility with major Aozora Bunko notes. Users can adjust font sizes and styles, change background colors and images, and specify screen rotation settings. With a user-friendly interface and extensive support for Japanese text formatting, this application serves as an excellent tool for anyone looking to delve into Japanese literature.