I assume you've already read You're My Loveprize in Viewfinder? If not, that's the one you'll wanna read first - the mother of all yakuza yaoi. THE yakuza yaoi. I second Asami-san's lover's suggestion. All of Kathy's lists are awesome and the yakuza list will be very helpful for you.
Does anyone else know any good yakuza yaoi manga?
http://www.mangago.me/read-manga/saezuru_tori_wa_habatakanai/
http://www.mangago.me/read-manga/aiso_tsukashi/
I recommend you use Kathy's list - u won't b sorry ! ...
I assume you've already read You're My Loveprize in Viewfinder? If not, that's the one you'll wanna read first - the mother of all yakuza yaoi. THE yakuza yaoi. I second Asami-san's lover's suggestion. All of Kathy's lists are awesome and the yakuza list will be very helpful for you.
http://www.mangago.me/read-manga/honto_yajuu/
police x yakuza :3
http://www.mangago.me/read-manga/koi_made_hyakurin/
It is like honto yajuu nor really hard core yakuza. The uke is stupidly cute.