http://www.mangago.me/read-manga/if_you_do_not_obey_me/
Idk if u can get more toxic than this
LEts have a toxic competition
don't worry, i loathe if you do not obey me more than any webtoon. at least LIAI has its cute moments.
oh yeah, @mintywolf. speaking of hate, i remembered http://www.mangago.me/read-manga/because_of_you/?av=1
Yaoi manga where the Uke and seme have a toxic relationship