I need help to find Brutal horror, so please help?

Corpse Party,Elfen Lied,Blood +,Hell Girl,Shiki,Akira,High School Of The Dead,Deadman Wonderland,Another, Higurashi No Naku Koroni!!,Helling,,Danganronpa,,School Days (Yes it is a horror...yandere horror O_O and there is only one horrible death but...It'lll give tu nightmares O_O)Forgot to add Mirrai Nikki so editted it as..it is yandere as....you know the siguiente word ^_^~~

Here tu go, brutal horror at its finest.

Elfen Lied, Another, Corpse Party: Tortured Souls, Deadman Wonderland, Devil Man, Higurashi When They Cry, Blood+, Parasyte: The Maxim, Hellsing Ultimate, Shiki (Also, Monster. Not brutal, but damn good)

Try Corpse Party
It's (apparently)so scary that tu can't sleep for days!!

Mirai Nikki/The Future Diary, Deadman Wonderland and Highschool Of The Dead.

Here's a picture of Yuno one of the main characters in Mirai Nikki/The Future Diary... Yup she's a yandere!

How about Baka and Test? There's a bloody death in almost every episode.
Okay, I'm just kidding. I would actually suggest Blood C, Mirai Nikki/The Future Diary, Attack on Titan, and Elfen Lied.

Akame Ga Kill!