User blog comment:Ichigostop/What A ShoCk!/@comment-2229670-20101209221110/@comment-2229670-20101209221510

The evidence i needed.

In 1997, One Piece appeared for the first time in Weekly Shonen Jump and promptly became one of the most popular manga in Japan. His biggest influence is Akira Toriyama, who is the creator of Dragon Ball and Dr. Slump.[1]

Source: http://en.wikipedia.org/wiki/Eiichiro_Oda