Boys and Girls of every age (PART ONE) "SLENDER"
Your character and his girlfriend (if you want only one you can do that too) are at Mercia Lake for a date, when they hear some footsteps. They turn around and see a female grey bat, with a black suited-school-uniform-like outfit on. They wave to her, but she just ignores them and continues forward.
But as she passes, you hear her say faintly "Next"
What happens next is up to you