Yaoi wanted: Sadist, Masochist, BSDM

http://www.mangago.me/read-manga/kobi_no_kyoujin/
I dont know if is masochist, but maybe you will like the BSDM

Thank you for the suggestion.

I'm not an expert, but maybe these:
http://www.mangago.me/read-manga/ronald_no_yabou/
http://www.mangago.me/read-manga/rakuen_no_ori/
http://www.mangago.me/read-manga/pet_keiyaku/
http://www.mangago.me/read-manga/midnight_dog_show/
http://www.mangago.me/read-manga/hakui_no_shihaisha/

http://www.mangago.me/read-manga/sasayaku_no_wa_sono_yubi/

http://www.mangago.me/read-manga/venus_ni_seppun/

http://www.mangago.me/read-manga/aka_no_ori/

http://www.mangago.me/read-manga/sadistic_boy/

http://www.mangago.me/read-manga/love_prism/

http://www.mangago.me/read-manga/erotic_m/

http://www.mangago.me/read-manga/saezuru_tori_wa_habatakanai/

Thanks for the suggestions, but I've read them already.