yakuza bl

I recommend these first:
http://www.mangago.me/read-manga/honto_yajuu/
http://www.mangago.me/read-manga/yondaime_ooyamato_tatsuyuki/
http://www.mangago.me/read-manga/you_re_my_loveprize_in_viewfinder/
http://www.mangago.me/read-manga/saezuru_tori_wa_habatakanai/

and here's more:
http://www.mangago.me/read-manga/kobi_no_kyoujin/
http://www.mangago.me/read-manga/totally_captivated/
http://www.mangago.me/read-manga/raise_wa_tanin_ga_ii/
http://www.mangago.me/read-manga/a_thousand_cranes/
http://www.mangago.me/read-manga/aka_to_kuro_katsura_komachi/
http://www.mangago.me/read-manga/acid_town/
http://www.mangago.me/read-manga/trap_city/
http://www.mangago.me/read-manga/moon_and_sun_abe_akane/
http://www.mangago.me/read-manga/nights/
http://www.mangago.me/read-manga/canis/
http://www.mangago.me/read-manga/koroshi_ya_to_freeter/
http://www.mangago.me/read-manga/intense_lee_kyung_ha/
http://www.mangago.me/read-manga/cover_up/
http://www.mangago.me/read-manga/the_story_of_a_yakuza_boss_reborn_as_a_little_girl/
http://www.mangago.me/read-manga/monetary_love/
http://www.mangago.me/read-manga/yakuza_sama_no_omocha/

http://www.mangago.me/home/mangalist/206/ close enough i think (not mine lmao)

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)