Yeah, one piece where a rubber-boy wearing a strawhat throws his fists around and yells "i´m gonna be king of the prates"
-Government wanting to build magic nukes out of blueprints
-The characters being all krusty and ugly
-All have their immature laugh, wtf is kishishishi?
-An island of women who are ignorant of men and the queen of that island who is a shichibukai and supposed to be their leader suddently falls in love with a guy like 10 year younger, all of a sudden it´s ok to have that guy on the island.
-Grown-ass men becoming pirates and sailing the seas for some magic treasure left behind by a guy who´s dead and no one even knows what it is!
Yeah, real mature series.