you're an adult teenager who's working in a convenience store, you live your life as a regular person, you have a nice apartment and a life, you are also still studying at University, at the convenience store, you'd start working at 5:30 pm till midnight
Here's the thing, everyday you work in a convenient store, something weird happens, like for example, a stranger comes to the store, or someone abnormal, you didn't think much about it, even how weird their appearance is.. it only happens at night time, sometimes objects will move too and you had to place it back to its original spots, but you were used to it, nothing scares you or spooked you out, it's a daily thing...
Today,You were working as usual.. helping customers.. after hours, it was already 7:00 pm..