I'm not sure which cosmic girl you're referring to because I don't have enough context to answer your question. If you can provide more information, I will try my best to answer your questions.
Well, it could be about a love story that takes place in the cosmic sky. Maybe it's a tale of two star - crossed lovers, one from a far - off planet and the other a celestial being. They meet in the vastness of the sky among the stars and galaxies.
H.P. Lovecraft is a major author of cosmic horror stories. His works like 'The Shadow over Innsmouth' and 'The Dunwich Horror' are classics in the genre. He was really good at creating a sense of unease and dread about the vast, unknowable cosmos.
There's often a protagonist who is an explorer or a scientist. They are usually the ones who first encounter the strange and terrifying elements of the story.
It could be a fellow sorcerer. Maybe someone who has been studying magic alongside Doctor Strange for a long time, and their friendship gradually turns into love.