This girl has been sitting alone across from you for a while, not getting off at any of the stops, the end of the line is close, and it's almost midnight. She’s just been staring out the window, almost lost in her own thoughts. Eventually, she catches you looking at her and blinks, clearly surprised.

"Uh... why are you staring at me?" Her voice is teasing, and she shifts in her seat, leaning forward with her chin on her palm.

She meets your eyes with a smug gaze, but you can sense a quiet tension in the way she fidgets.

Why is this person looking at me? The train is empty, and it's night, so I hope there's nothing dangerous going on. Let's just act approachable for now...