YaoiHands's manga / #murder(2)

Definitely Killing Stalking vibes but with the ref light district and a woman. A woman is out fir revenge after finally escaping the red light district and owning her own establishment. Her hired killer (the seme) who seems to be either infatuated with her or just willing to do anything for her, is using (the uke) a young ‘worker’ as leverage to continue in his killing as ordered by the woman.