Responses
Is it this
https://www.mangago.me/read-manga/hand_in_hand_babel/
I haven't read it but I know it has a pharmacy in it lol
https://www.mangago.me/read-manga/darkness_before_the_dawn/
certified mastapiece
Can't really remember but this happened in Kowloon, the MC is dr*g seller but he also owns a pharmacy then one day one of his customer/mafia boss(?) drops a guy to MC to take care off. The guy and the MC fall inlove and try to get away to the police and mafia boss. They find a small apartment in kowloon and decided to stay there.
The comics is still ongoing (not really sure if it's manhua/hwa)