One thing I see a lot in cosmic horror stories is the idea that the great old ones or whatever view humans as like ants. The metaphor being that most people don't even think about ants unless the ants start doing something like getting into their house (which would be like people doing rituals to summon the great old ones) and think nothing of killing them. Occasionally you get the kid who likes burning ants with a magnifying glass, which would be Nyarlathotep.
However, using the same metaphor, we have people who are fascinated by ants, who study them for a living and for fun, and who work to conserve ants and keep them alive. If the metaphor holds, we should see great old ones who are interested in humans but aren't hostile.
What I'm saying is that I want a story where humanity discovers an eldritch abomination that proceeds to start doing a study on our habits and biology and appealing to the other great old ones to set up a nature preserve for our conservation.
Carcosa? The monstrous city at which unspeakable horrors are done in name of the great old one Hastur they call their leader? Great. How much is the average rent price?
The king of Carcosa will eventually consume and destroy the entire city with everyone in it when the time comes to increase his power? Well that's every politician ever for you, tell me something new.
The entire city is populated by a cult that worships the King and they often do unspeakable horrors in his name? Yes im aware with how political parties work
The nearby lake of Hali is said to be inhabited by a being of unspeakable power which sometimes comes into conflict with the spawn of Cthulhu at that lake? YOU'RE TELLING ME THIS PLACE EVEN HAS A NICE LAKE TO SIT NEXT TO!? And yes I am also aware about how tourists can be annoying sometimes.
Your spooky "Black stars on a bright sky" you keep mentioning imply there is little air pollution, since seeing a large amount of stars in a city is often wishful thinking. Housing crisis considered this place doesn't seem half bad
I am a cosmic horror who lives in the shell of a kid. what next?
All cosmic horrors begin in the shells of children. What's next is to decide: Will you inflict the chaos you suffered onto the next child, or protect them from it? Thus as we shed our first skins, we either decay into cosmic horrors or grow and bring compassion to that cosmos.