With the vast majority of transcending genres that Anime are based on these days, it would be logical enough to also delve into a few less talked about Genres that might be inappropriate to those with a weak heart.
These are the Top 7 ANIME that are absolutely not for the Faint of Heart.
I couldn't Swallow the very 1st Episode of ELFEN LIED.
Does it get good later or is it all bout mindless Violence???
Only time manga is better is when it depicts things in a more accurate way or because the anime gets a lots of censors otherwise 90% of the animes follow the manga religiously detail by detail.
Shigurui Death Frenzy
School Days
Elfen Lied
Violence Jack (It's all in the name lol)
Mnemosyne
Higurashi
Gantz
I've also heard Amon, and Black Lion were pretty damn bad
but End of Evangelion is just..... MIND F*CK
you are gonna be like "what the hell is going on!?"
Berserk has Griffith raping Caska in front of Guts. I mean, your best friend for life is raping your girlfriend in front of you!
Like already mentioned, Gantz is epic. Most people that didn't like it only watched like 1 or 2 episodes and then dropped it.
Gurren Lagann is literally the most epic thing that I have seen in my life and those that has watched it will understand why I say it. Gurren Lagann gives an entirely new meaning to the world epic.
and just to mention a few others: Saikano, the School Days ending, Code Geass, Rumbling Hearts, Madoka... And the obligatory End of Evangelion.
It'd be interesting to see what other people thought were not for the faint of heart for manga series.