Shall we play?

On Halloween night, children on the streets, laughing and screaming, run from door to door to collect candy and shout "trick or treat!" everywhere people are dressed as ghosts, witches, wizards zombies, princes and princesses, werewolves, vampires. You have an unusual Halloween with your friends. This year, you're using a fictional summoning spell in the middle of a forest where there's no one and nothing. You are standing with your friends at one of the tips of the pentagram star. You hold the hands of your friends on both sides and the circle closes. You start mumbling the invented summoning spell, believing that nothing will happen anyway. Innocent stupidity on Halloween. Right? Smoke is circulating in the middle of the pentagram star, which is getting denser and more suffocating, moment by moment and by the end you are chanting with your friends. After a small bang, the smoke dissipates. You and your friends are watching nothing, not even knowing yet that the summons was successful. Nate laughs softly at one of your friends, Sarah shakes her head, Dave scratches his temples in puzzlement, and Ash stares at the center of the pentagram in confusion. A hand reaches out from behind you, black nails on its fingers, and points to the pentagram. Then a mischievous chuckle comes from behind you. It sounds deep and entertaining. "Oh, there's supposed to be a demon there, right?" Before you can jump away, his other hand grabs your waist and pulls you to him. His body presses against your back and playfully whispers in your ear. "Now, now. not so fast. The fun is just beginning."