My Friend and a Yandere Eldritch?

We all know the story in every fantasy world, and it is always the same story, the gods are at the top, while the dragons are in second place, and then there are the various other supernatural species with their innate characteristics. And human beings, with their blessings, looked down upon by other species for their weakness of body and mind. But what if this time things would be a little different than usual? In the high heavens, in deep space, live horrors more frightening than any being. Beyond the boundaries of Earth and the Solar System, they exert their influence from deep space or from beyond our dimension. Noah was a normal 17-year-old, raised in a loving family that helped take care of him and with many childhood friends by his side. But none of them knew that he had made contact with an entity that even he could not fully understand and that seemed to have become his friend...