Please recommend

the unhealthy kind
http://www.mangago.me/home/mangalist/862420/

http://www.mangago.me/read-manga/otte_otte_koi_o_shite/
http://www.mangago.me/read-manga/aruhi_hyouhenshita_shinyu_ni_kokuhakusa_remashita/
http://www.mangago.me/read-manga/sweet_crazy_days/
http://www.mangago.me/read-manga/decision_webtoon/
http://www.mangago.me/read-manga/hoshoku_sha_kisumi_kun/

Half of these are really twisted so read at your own discretion lool
http://www.mangago.me/read-manga/mayday_mayday_mayday/
http://www.mangago.me/read-manga/warehouse/
http://www.mangago.me/read-manga/hogu_hagyeongsu/?YRPB
http://www.mangago.me/read-manga/sura_s_lover/
http://www.mangago.me/read-manga/palace_of_bardo/
http://www.mangago.me/read-manga/you_re_my_favorite_toy/
http://www.mangago.me/read-manga/escape_into_oblivion/?cEKk
http://www.mangago.me/read-manga/stalker_s_game/
http://www.mangago.me/read-manga/caste_heaven/

Down and dirty
But this had some rape content but definitely worth to read
It's about prostitution. But it's really good and unique.

Damnnn Thank you so much