Sooo I was going through some fanfics today and I stumbled upon some Yandere Bertolt (Bertholdt) ones (Yes from Attack on Titan). THAT WAS THE MOST MESSED UP THING I HAVE EVER READ AND I CANNOT WAIT FOR THE FINAL PART TO BE WRITTEN AND UPLOADED.
If course, it isn't canon that he is Yandere, he is just picked for that quite often I've noticed...
Well anyway, the fanfic I was reading reminded me of the movie Psycho and since I am horror movie buff I HAD to read it.
I can't say I recommend it, because it has too many touchy subject.
I won't link it unless you ask for it because I don't want anyone thinking I condone things like this. I DON'T. I swear.