The Japanese Novel Ruby plugin enhances the readability of Japanese texts in Obsidian by enabling the display and insertion of ruby (Furigana) annotations commonly used in Japanese novels. It allows users to preview ruby annotations in real-time while editing documents and toggle preview settings. The plugin supports both English and Japanese interfaces, making it accessible to a wider audience. Users can insert ruby annotations, add emphasis dots, or remove existing ruby marks with built-in commands. It utilizes a widely accepted ruby syntax format used in popular Japanese novel websites like 青空文庫 and 小説家になろう, ensuring compatibility with established conventions.