You step back slowly, trying to make sense of what’s happening. The knock comes again—this time softer, almost like it’s waiting for your permission. You gather courage and ask, “Who is it?” From outside, a voice answers… but it’s your own voice. That’s when everything feels wrong. You realize the truth: the voice note wasn’t sent from outside. It was sent from your future self. Somehow, a version of you who has already experienced something terrible is trying to warn you. The reason it sounds like you is because it is you. Another knock. But now your phone screen lights up again. A new message appears from the same unknown number: “Don’t open the door… because I already did.” Your hands start shaking. You slowly turn toward the door again, but this time you notice something strange—there is no shadow under it anymore. Silence fills the room. You decide not to open it. You step back, holding your breath. The knocking stops. Then suddenly, your phone records one last voice note automatically. It’s your voice again… but calmer this time: Good. You listened And everything goes silent.