Invasive Entity

Create a story in which an incomprehensible entity from another dimension invades a person’s consciousness, progressively making them perceive the world around them as horrifying.

This prompt allows you to delve deep into the human psyche, playing with the thin line between reality and illusion. You can examine the terror of losing oneself, the fear of being trapped in one’s mind, and the struggle to maintain control when you’re being eroded from the inside out.