There are many sources for free reading material in Japanese for Japanese language learners, here are a few good options:
1. NHK News Easy: This website provides news articles in simplified Japanese, with furigana above the kanji characters, making it easier for learners to read. The site also includes audio for each article, as well as videos.
2. Aozora Bunko: This website contains a large collection of Japanese literature that is free to read online. The site has over 15,000 works, including works by famous authors like Natsume Soseki and Yasunari Kawabata.
3. Tadoku: This platform offers graded reading materials for learners at all levels. You can choose from a variety of genres, including news articles, short stories, and even manga. Additionally, the site offers quizzes, word lists, and other learning tools to help you improve your reading skills.
4. Satori Reader: This website offers Japanese reading material along with audio, translations, and explanations of difficult vocabulary and grammar concepts. The site has articles on a variety of topics, such as culture, history, and current events.
5. Nihongo no Mori: This website offers reading material, videos, quizzes, and other resources for learners of Japanese. The site has a section for reading practice, which includes articles on a variety of topics, with vocabulary lists, grammar explanations, and quizzes to test your comprehension.