The manga, published by Shueisha in their magazine Weekly Shōnen Jump, started in 1987 and went on to 2004. The latest part was initially published in Weekly Shōnen Jump, but was moved to Ultra Jump in 2005. It is currently Shōnen Jump's
second longest running manga with 94 volumes and counting (only Kochi-Kame, with 150+ volumes, has more.)
as quoted from wikipedia...and what is thaaatt???
JOJO's Bizarre Adventure!!!
In continuous publication since 1976 with over 1400 chapters, Kochikame is the longest-running manga series in history (Golgo 13 and Doraemon have been around longer, but neither has been in continuous publication). As of volume 158 the series has sold over 135,000,000 copies[1]
as quoted too from wiki, it decides which one's the longest manga ever made!!