well imo the worst anime/manga EVER is naruto sorry naruto fans but after rock lee & gara fight i couldn't watch it anymore even the manga, making cool character like rock lee looks like sh*t but those gay looking ones like sasuke & other "pokemon" ninjas looks better than him, plus the story is getting lamer & lamer every time a chapter comes out nah that's way too much i mean that anime is anything but a ninja anime really it's a disgrace for ninjas it's more like pokemons who wants to be ninjas.
plus the story is getting worser & worser unlike the best anime/manga out there "OnePiece"
i know a lot of ppl including myself didn't like it from the beginning but after giving it a chance it's the best manga/anime out there right now especially the water 7 arc & the thriller bark arc it's just getting better & better.
anyway, of course we can't all agree in one thing, everyone have his own opinion but i have 15 of my friends stopped liking naruto after watching onepiece.