When you're a kid, it's usually a safe bet to assume that most animated media is for you. Sure, adult cartoons like South Park, Rick & Morty, and Family Guy exist as well, but the line between children's and grown-up's content is usually pretty clear. But, when it comes to anime, the line can be much harder to see - particularly for new, young fans. There are a ton of reasons why anime is not for kids and there are just some shows that kids should not watch. It's not just because of graphic content, but because the intellectual themes will simply sail over their heads.
Just because an anime has epic mecha battles or neon-haired protagonists in the promo art doesn't mean it's necessarily a kid's show. If you've dismissed anime before because it looked too childish, then maybe you missed out on something profound. Compiled here is a list of intelligent anime series that are way too deep for kids to understand. Check out the titles to see if you may have missed the bigger picture when you were younger, and vote up the anime that's way too smart for kids to fully understand.
On the surface, Death Note is the story of a boy, a detective, a demon, and a magical book. But, scratch a little deeper and you'll find a complex crime thriller that is also a supernatural horror fable rolled into one. The majority of the series is comprised of highly intelligent characters playing mental chess with one another. Though the anime does its best to dramatize these scenes (sometimes with hilarious results), densely written stories like this don't usually go down well with kids.
Kids love cyborgs and robots, right? Well, despite that, in the same way you wouldn't let your child watch RoboCop, Ghost in the Shell: SAC is similarly not going to be suitable for a young audience. The tagline from Adult Swim's promos for the show in the early '00s should give you enough of a clue as to why.
"What happens when technology subdues humanity? When humanity is no longer defined by being human."
The complexities of post-humanism and cyborg anthropology at the heart of the Ghost in the Shell franchise is lost even on adults. Thus, children aren't going to have an easier time with it.
In the same way that Yuri!!! On Ice isn't about ice skating lesbians, Monster isn't really about the snarling, red-eyed, hide-under-your-bed kind of monsters you might expect if you take the title literally. It's more about the other kind of monster - humankind. Essentially, this anime uses the "would you save a baby even if it turned out to be Hitler?" ethical debate and spins it into an entire story with terrifying results. Younger viewers should probably stick to Pocket Monsters instead.
Not only is Neon Genesis Evangelion not suitable for kids on an intellectual level, it's also not the ideal introduction to the mecha genre. Why? Because it's considered to be a complete deconstruction of it. To understand a deconstruction, you first have to become really familiar with the genre itself. It would be like reading Watchmen as your first superhero comic book, and anything that requires homework first is bound to be off-putting for a kid.