try JAZZ first, then proceed with all the mangaka's work. JAZZ got me to possessive. lol. Then search thru Ogawa Chise's work, most are darkish and obssessive, i think youd like Ouji no Hakoniwa. An all time favorite, tho, is SCARLET by Madarame Hiro. Now sensei's work is def my cup of tea, and I am pretty sure youd like it too hihi
also this, but art is awkward
http://www.mangago.me/read-manga/suterare_omega_wa_nido_naku/
I have quite a few that should be what you're looking for
http://www.mangago.me/read-manga/you_are_still_in_a_bird_cage/ (GL the rest are BL)
http://www.mangago.me/read-manga/dear_crazy_monster/
http://www.mangago.me/read-manga/dogeza_shite_kudasai/
http://www.mangago.me/read-manga/kawaii_senpai_no_kaigoroshikata/
http://www.mangago.me/read-manga/uruwashiki_shuen/ (personal favourite)
Hopefully there's atleast one you'll enjoy
Okay so it’s a series but here’s the first one but also read the sequel as they are good
http://www.mangago.me/read-manga/k_sensei_no_yajuu_na_aijou/
Looking for any type (shôjo, yaoi, yuri...) I'd like one of the character to be a true possessive lover. Really possessive. I don't mind abusive.
If it can help, here's what I'm quite into: Hyakujitsu no Bara, Warehouse, Killing Stalking, Totally Captivated, Hogu Hagyeongsu, Save Me, Seikai Ichi Hatsukoi (Takano x Onodera), Sakura Gari and Harada's work....