2channel (also known as 2ch or ２ちゃんねる) is not an anime series but rather a Japanese textboard website founded in 1999. It became a significant part of Japanese internet culture, inspiring various memes, stories, and adaptations, such as the 'Densha Otoko' phenomenon. While it influenced many media works, it itself is not a traditional media series but a web forum known for its anonymity and cultural impact.