Here you go!
http://www.mangago.me/read-manga/saezuru_tori_wa_habatakanai/
http://www.mangago.me/read-manga/anohito_to_nitenai_kuchibiru/ chapter 6
http://www.mangago.me/read-manga/usagi_otoko_tora_otoko/
http://www.mangago.me/read-manga/honto_yajuu/
http://www.mangago.me/read-manga/double_hound/
http://www.mangago.me/read-manga/kakugo_wo_kimete/
http://www.mangago.me/read-manga/yondaime_ooyamato_tatsuyuki/
MAFIA
http://www.mangago.me/read-manga/you_re_my_loveprize_in_viewfinder/
http://www.mangago.me/read-manga/dispar_4u/
http://www.mangago.me/read-manga/yondaime_ooyamato_tatsuyuki/
http://www.mangago.me/read-manga/mitsumei/
http://www.mangago.me/read-manga/saezuru_tori_wa_habatakanai/
http://www.mangago.me/read-manga/burns/
http://www.mangago.me/read-manga/madman_combo/
http://www.mangago.me/read-manga/seduction_against_seduction/
http://www.mangago.me/read-manga/gangsta/ (not yaoi)
http://www.mangago.me/read-manga/gray_lujun_kazekaoru/
http://www.mangago.me/read-manga/totally_captivated_dj_mr_sangchuls_diary/
http://www.mangago.me/read-manga/circle_trap/
http://www.mangago.me/read-manga/legs_which_cannot_walk/?ov8I
http://www.mangago.me/read-manga/kobi_no_kyoujin/
http://www.mangago.me/read-manga/cover_up/
http://www.mangago.me/read-manga/trap_city/ (MUST READ)
any yaoi recommendation with mafia theme <3 (▰˘◡˘▰)