Recommendation

dear benjamin - it has a similair feel and they both have mafias and police involved

Try " dangerous convenient store"

"Finder" That stuff is good if you can handle the art style, it's lil old but I promise you it gets increasingly better (▰˘◡˘▰)

Red candy.. if you like spy and action undercover bl

Boy do I love dangerous convenient store

How about these:
http://www.mangago.me/read-manga/madman_combo/

http://www.mangago.me/read-manga/your_devotion_is_my_salvation/

http://www.mangago.me/read-manga/totally_captivated/

http://www.mangago.me/read-manga/when_the_yakuza_falls_inlove/