Shonen Jump/YMMV


 * Fandom Rivalry: Inevitable, really, but surprisingly less common than you might think. Back in the old days, it was Dragon Ball vs Sailor Moon, Fullmetal Alchemist vs Inuyasha, and Dragon Ball vs Saint Seiya.
 * Nowadays, the main focus is on the Big Three (most popular shonen series over the past decade) - One Piece vs Naruto vs Bleach, with Fairy Tail and Medaka Box recently entering the fray.