I have a friend who introduced me to an idea of hers in which there is a society of androids with human emotions, with the exception of one missing one. We've gone on to call this idea "Missing" and I've been playing around with it a lot and it's been very fun to worldbuild. I have found myself encountering some plot holes, though, as I make my way deeper into how the world works. For example, some things that have been bothering me in particular are aging/dying/lifespans. Could I get some advice as to what I can do to make this world function properly? Anything helps.
Feel free to ask any questions you may have about this universe. Yes, I have a page for it, but I plan on developing it some more before making it public.