you probably know what i know already so just following!!~
Following~
Guys please
Royal Servant, but I'm guessing you know this- There is also...
http://www.mangago.zone/read-manga/ameiro_paradox/ (though the possessiveness isn't quite as blunt)
http://www.mangago.zone/read-manga/yandere_hitotsu_yane_no_shita/
http://www.mangago.zone/read-manga/toshishita_kareshi_no_renai_kanriguse/
http://www.mangago.zone/read-manga/if_you_hate_me_that_much/
And lots, but these are the only ones that immediately come to mind. Enjoy the possessive tag, though. http://www.mangago.zone/tag/possessive/?page=1
Yayyyy .. thankyou sooo much
Hickey+possessive+madly in love yaoi needed!!!!!!