Complex sentence: Aozora Bunko (青空文庫, the "Blue Sky Collection") in Japan is a similar project to Project Gutenberg, which focuses on digitizing non-copyrighted texts under Japan's copyright law and distributing them for free.
Split into simpler sentences: Aozora Bunko (青空文庫, the "Blue Sky Collection") in Japan is a project similar to Project Gutenberg. It focuses on digitizing non-copyrighted texts under Japan's copyright law and distributing them for free.