* http://www.mangago.me/read-manga/samenai_yume/
I have it tagged as CREEPY in my list..
Sooooo dong agree with sugureta! I believe that every yaoi is awesome and this does not make any difference! Only more unique to be exact! This has twist, horror, thiller, drama, and most of all a yaoi! So mad at you right now sugureta...... Yes its creepy but thats what makes it different!
http://www.mangago.me/read-manga/kusatta_rasen/
pretty creepy incest relationship...also check out some of her other works
http://www.mangago.me/read-manga/samenai_yume/mh/c002/18/
Guess that counts O.O
Uhm I don't remember the title anymore, it was by Yamamoto Kotetsuko - something about Twins and one becoming an ... Anemone I guess? It was so thoroughly strange with that tadbit of horror in it... and that freaking water tank!
Ah found it
http://myreadingmanga.info/yamamoto-kotetsuko-yami-bl-anthology-anemone-eng/
Which yaoi manga has the weirdest/creepiest sex scene ever??