Quick idea but:
In the far future, the humanity has become a myth upon their supposed "extinction". However, their automated factories continue working, building more and more androids that create their own civilization that largely imitates human society. For most of the androids, life is pretty normal, but one group of friends decides to abandon their current lifestyles in the name of curiosity, going on an adventure to explore the world, and perhaps find out what truly happened to their creators.
The androids mentioned will look anime-esque, and are inspired by Mega Man designs. As for posts, they will be at least one paragraph long and preferably 2-3 times a week to keep an even pace.