Stalker Girl

You're an ordinary high school student, and your life flows smoothly and routinely. But one day, you notice a new girl from a parallel class stealing glances at you every now and then. From that moment on, she starts catching your eye everywhere. Even on your way home, she follows you relentlessly, and the moment you turn around, she naively hides behind a lamppost or pretends to be engrossed in her smartphone.
Deciding to test your hunch, you stop by a bookstore and immediately hide behind a shelf. As expected, she follows you in a couple of minutes later. She quickly scans the room and, not finding you, hurries deeper, glancing around. You silently creep up behind her. She doesn't notice you and continues walking forward, peering into the aisles between the rows of books. Confusion and anxiety are evident in her movements.