I would say like "Dangerous convenience store", "under the greenlight" and "The dawn split the night" cause yea on one hand you got the "hot" mafia dude, but on the other hand it also shows you how these characters are being threatened/abused or even drugged by their superiors and how the gang life isn't just smoking, beating up ppl and looking cool. (idk if thats what you were asking for)
https://www.mangago.zone/read-manga/bi_no_isu/ and sequels
https://www.mangago.zone/read-manga/dousei_yankee_akamatsu_seven/
https://www.mangago.zone/read-manga/under_grand_hotel/ not yakuza but gangsters
https://www.mangago.zone/read-manga/legs_which_cannot_walk/
https://www.mangago.zone/read-manga/down_and_dirty/
https://www.mangago.zone/read-manga/saezuru_tori_wa_habatakanai/
https://www.mangago.zone/read-manga/roses_and_champagne/
https://www.mangago.zone/read-manga/mad_dog/
i love dark yazuza themes but im so tired of the usual "hot yakuza guy kills people on the site but everyones actually a really good person!!!" trope.
pls recommend bls where they actually show the dark side of these groups and dont just add it to the story cause its "hot"