Short Story About Micro-Fear Outside the Door

Joda found that there was a strong gaze watching him from outside the door. He opened the door several times, only to find that there was no one at the door. The feeling that there was someone outside the door became stronger and stronger. Until one day, she saw exactly the same version of herself in the elevator and realized that things were not as simple as she imagined. She doesn't want to find the truth, but fate keeps pushing her towards the truth. Purpose: looking for the truth