Shops and clerks for them are done for now. We have cafe, witch hut, workshop and general shop (let's use these names for location field as well). I expect some kind of hangout or black market for drugs and maybe laboratory or another scientific-looking place for more advanced items like guns in the future.
The next are items hunting locations.
Besides, I think that an addict to drugs loly that had sex with the devil is overkill even in hentai game, so I've found a more adult witch.
Also we might need another type of items in the future, quest items. I propose that they cannot be equipped or used, but still could give bonuses or penalties to the owner (if were created with bonuses or penalties), and they cannot be sold, thrown out, given to someone, etc. except for quest cases.