 If you liked
Saezuru Tori wa Habatakanai
|
 ...then you might like
Canis Series
|
It's a little difficult to explain why I'm recommending this manga, bc on the surface, these two are very different. While Saezuru deals entirely with the world of the yakuza, Canis deals with the yakuza as its background - with more focus being on the relationships between the MCs. If I had to point out similarities, then it would be how well written the MCs of both the manga are, and how fantastic the art in both of them is!
And ofc, the fact that they're both ongoing :/