There are many lively forums with references and documents in Japan. The following are some famous ones: 1. 2ch(2ちゃんねる): It is one of the largest anonymous forums in Japan, covering various topics, including news and animation. 2.NAVER matome(NAVERまとめ): It is a community-based content aggregation, and users can create and share their own theme content. 3. Yahoo! Know the package (Yahoo! Knowledge+): This is a Q&A community where users can ask questions and get answers from other users. 4.はてな(Hatena): It is a platform integrating blog, social media and news services, and users can publish and share their own articles and opinions. 5.cookpad(クックパッド): It is a community with the theme of cookbook sharing and communication, where users can share their cooking experiences and recipes. 6.GirlsChannel(ガールズちゃんねる): It is a forum focusing on women's topics, where users can discuss various topics related to women. 7. "Nurse" display board: it is a forum with legal issues as the theme, and users can seek legal advice and share relevant experiences. Please note that these are just some lively and well-known forums. In fact, there are many other forums to choose from in Japan. It is more important to choose the one that suits you according to your personal interests and needs.