The Growth History of Cthulhu Superman

My name is Carl, an ordinary UM student. My daily life consists of attending classes, working part-time, and carefully maintaining the "normality" of this world. In my eyes, the city has two faces: one is what my classmates see, which is sunny and orderly; the other is the tentacles squirming behind the walls and the crazy whispers filling the air. Yesterday, my roommate excitedly showed me an old "weird oil painting" and said that if you stare at it for ten seconds, you will find the hidden picture. He didn't know that it was not a hidden picture, but an eye from an alien space that was slowly opening. And today, a beautiful girl confessed to me in front of everyone. Her smile was sweet and her voice was melodious, but in my ears, it was mixed with countless overlapping, inhuman voices chanting in unison: "... Found you... The... Core of the world..." A semi-original world of Cthulhu, adding a little creativity to the original world view of Cthulhu, something like this