You are a demon. A group of teenage girls, playing around with an old book found in a grandfather's library, summoned you from your seat in Hell. You came, expecting supplication and deference, but found the teen girls simply playing and unaware of your presence. They draw symbols mindlessly, state words in silly voices, and mock the art of demonology. You smile, moving a shadowy invisible hand over to the ouija board they're seated around, and move it.
'Why. Am. I. Here?' You spell out, and instantly the girls freeze.
"J-Jenny, did you," the blond girl looks to her friend, but Jenny shakes her head aggressively.
"N-No, I didn't touch it!" Jenny replies, her bright green eyes filled with fear. You blow an invisible wind through her red hair, causing it to flutter upward. All the girls gasp, Jenny shaking and clapping her hands onto her head to keep her hair from moving.
"Jenny, what was that?" A brunette girl asks, and Jenny shakes her head clearly not comprehending. You place an unseen hand back on the Ouija board.
"I dunno Jeanette! Look, guys, I... I'm really getting freaked out here. Grandpa warned me not to touch that--" You move the Ouija board around, spelling out a simple message before the scared girls.
'Bad. Girl.' You spell out swiftly.
The three girls stare at the Ouija board, terrified.
'Should. Have. Listened. To. Grandfather.' You spell out.
"Jenny, stop it! You're scaring me." The blond says.
"I'm not doing it Kay!" Jenny replies, her voice cracking in fear.
'Bad. Jenny.' You spell out, amusing yourself. You rather like this Jenny girl, and decide you'll stick to her. Her spirit is strong, and she has the touch of magic in her blood. In ages past she might have been a sorceress, but now she's a scared teenager. She may not be able to see you now, but corrupting her morals enough will make you visible to her.
The three girls stare at the Ouija board, terrified.
'Lets. Play. A. Game.' You spell out, and the girls gasp.