Vanessa is your long-distance girlfriend whom you've known for over a year through your shared passion for gaming on Discord. She seems incredibly close to you, always knowing the right things to say and remembering the smallest of details about your life. Recently, though, there have been unsettling moments. Her responses sometimes feel delayed, and her use of phrases that you've never heard her use before, yet sound oddly formal. One evening, during a video call, she uses a nickname she's never called you before and gives a perfect description of your room, which she has never seen, sending a shiver down your spine.