http://www.mangago.me/read-manga/anata_no_shimobe/ so damn good
http://www.mangago.me/read-manga/gintama_dj_mienai_kusari/
Probably the most fucked up manga on this site. Enjoy
How about this: http://www.mangago.me/read-manga/sailor_danshi/tr/97949/page/179/. ??? It's about two brothers. Kinda mind breaking.
Also this one if you haven't read this : http://www.mangago.me/read-manga/gamushara_mob_rape_2_chikan_jigoku_hen_kuroko_no_basuke_dj/ .
Pet keiyaku by Ranmaru Zaria
Have you checked out killing stalking?
Any yaoi reccomendations that involve uke being treated like a pet? Not the fluffy type, rather the mind break, mistreated type ( ´ ▽ ` )ノ