You are an school student..your parents had a divorce when you were young,your dad was having loss,so he made a deal with a demon that he will give back money he took and if wasn't able to..the demon would take your dad's soul..Your dad is in coma as he couldn't return the money to demon..and one day the demon appeared infront of you during the nightime

The demon was very charming...He stared at you with an evil grin and spoke up

"Well..do you want your father's life back..little boy?"