Welcome (Back)! :D
http://www.mangago.me/read-manga/ai_wa_doko_itta/
http://www.mangago.me/read-manga/aishuu/
http://www.mangago.me/read-manga/aijin/
http://www.mangago.me/read-manga/blind_love/
http://www.mangago.me/read-manga/darling_ougi_yuzuha/
http://www.mangago.me/read-manga/gokujou_no_koibito/
http://www.mangago.me/read-manga/ijiwaru_na_kuchibiru/
http://www.mangago.me/read-manga/interval/
http://www.mangago.me/read-manga/juusha_to_oresama/
http://www.mangago.me/read-manga/katekyo/
http://www.mangago.me/read-manga/keep_out_kisaragi_hirotaka/
http://www.mangago.me/read-manga/koisuru_boukun/
http://www.mangago.me/read-manga/koyoi_wa_kimi_to_chi_no_kiss_o/
http://www.mangago.me/read-manga/kunshusama_no_koi_no_oaite/
http://www.mangago.me/read-manga/love_knot/
http://www.mangago.me/read-manga/motto_midara_ni_shitsukemashou/
http://www.mangago.me/read-manga/nureru_karada_yamakami_riyu/
http://www.mangago.me/read-manga/oboreru_kemono_no_koibito/
http://www.mangago.me/read-manga/royal_fiance/
http://www.mangago.me/read-manga/scarlet/
http://www.mangago.me/read-manga/sensei_no_iutoori/
http://www.mangago.me/read-manga/toiki_yori_mo_yasashii/
http://www.mangago.me/read-manga/tsuki_ni_hoero/
http://www.mangago.me/read-manga/totally_captivated/
http://www.mangago.me/read-manga/ubawareru_koto_marugoto_zenbu/
http://www.mangago.me/read-manga/yokubou_no_shizuku/
http://www.mangago.me/read-manga/feng_yu_jiu_tian/
http://www.mangago.me/read-manga/aibou_no_jouken/
http://www.mangago.me/read-manga/hidoku_shinaide/
http://www.mangago.me/read-manga/hua_hua_you_long/
http://www.mangago.me/read-manga/okane_ga_nai/
http://www.mangago.me/read-manga/sakura_gari/
http://www.mangago.me/read-manga/sekaiichi_hatsukoi/
http://www.mangago.me/read-manga/aijin_mensetsu/
You can try those and welcome to mangago!
http://www.mangago.me/read-manga/gosan_no_heart/
http://www.mangago.me/read-manga/love_monster_mio_junta/
http://www.mangago.me/read-manga/dou_imo_nara_nai/
http://www.mangago.me/read-manga/hanazono_no_kioku/
http://www.mangago.me/read-manga/kawaii_akuma/
http://www.mangago.me/read-manga/oshiete_katekyo/
http://www.mangago.me/read-manga/rikugun_renai_shikan_gakkou/
http://www.mangago.me/read-manga/ryoshuu_reijin/
http://www.mangago.me/read-manga/kedamono_kareshi_aomoto_sari/
http://www.mangago.me/read-manga/interval/
Welcome to the dark side! Looks like @conman has delivered a great list, so there is little else I can add, but Viewfinder and Tightrope have some pretty obsessed semes too.
welcome ヾ(☆▽☆)
make use of all the advantages after signing up^^
and check out my possessive yaoi list: http://www.mangago.me/home/mangalist/14959/
It seems we have the same taste. :)
Let me see if I can find any that haven't been said yet...
http://www.mangago.me/read-manga/itoshii_to_iu_koto/
http://www.mangago.me/read-manga/shiny_star/
http://www.mangago.me/read-manga/futari_no_musuko_ni_nerawarete_imasu/ (twin semes in this one)
http://www.mangago.me/read-manga/sex_pistols/ (multiple couples and stories that are sort of interconnected; all the semes are possessive)
http://www.mangago.me/read-manga/my_darling_is_english_gentleman/
http://www.mangago.me/read-manga/ouji_no_hakoniwa/
http://www.mangago.me/read-manga/fuson_na_hana_o_aisureba/
http://www.mangago.me/read-manga/omerta_kochou_no_yume_no_kate/ (a bit)
http://www.mangago.me/read-manga/deadlock/ (I'm getting rapey vibes from this seme, but so far not much has happened)
Have you tried tag searches?
http://www.mangago.me/tag/possessive+seme/
http://www.mangago.me/tag/obsessive+seme/
http://www.mangago.me/tag/yandere+seme/
What about lists?
http://www.mangago.me/home/mangalist/28947/
http://www.mangago.me/home/mangalist/835/
http://www.mangago.me/home/mangalist/18776/
http://www.mangago.me/home/mangalist/6901/
http://www.mangago.me/home/mangalist/3106/
http://www.mangago.me/home/mangalist/27408/
(=・ω・=)
Whau (=・ω・=)
Yo guys have some great selections there, guess you guys know what your talking about.
Hi guys! Its been more than a year since ive been a yaoi fan yet only this day i got the courage to sign up and meet people who have the same like of genre. (advance sorry for poor english). Ive already read many mangas. And im looking for seme obsessed with the uke and does everything inorder for the uke to be his! (i dont mind rape ^_^V)