Some of the most popular anime in Japan have never set foot on American shores. Oh sure, we have Naruto and Pokémon and Dragonball Z, but what we don't have are the kids shows — the Japanese anime equivalent of SpongeBob SquarePants, Dora the Explorer and the like. Why? Because while you'd think they'd be the most adaptable for worldwide audiences –- kids are kids, right? –- they're actually quite insane. Here are seven anime series that Japanese kids love that no American parent would ever let their kids watch.