The Most Exciting Soccer Manga Ever! | "Ao Ashi" by Yugo Kobayashi | 『アオアシ』 小林有吾
There have been a few major soccer mangas such as the classic "Captain Tsubasa". But I believe "Ao Ashi" will exceed them. If you have ever played soccer, I believe you agree with me. "Ao Ashi" is realistic and exciting. Just try reading it.
The problem is that there seems to be no English edition yet. If you are interested in learning Japanese, "Ao Ashi" would be an enjoyable reading material :)