rakuyomi is a manga reader plugin for KOReader that enables users to browse, search, download, and read manga on e-book readers. The application features a Rust-powered backend communicating with a Lua-based frontend via HTTP over Unix domain sockets. The backend manages manga sources (installable as WASM modules), tracks reading progress in a SQLite database, handles chapter downloads with progress tracking, and provides settings management. The frontend delivers the user interface within KOReader for library viewing, source management, and chapter reading. Although the repository includes a well-structured architecture with reusable components like a job system and WASM import toolkit, the README explicitly states the project is no longer actively maintained, directing users to a fork for continued development.