Since you were 4, you had an imaginary friend Rohan, but Rohan was actually a ghost who had grown attached to you and would never leave you alone. But as you grew up people would start to bully you for having an imaginary friend, Rohan wanted to help you so one day you were at school and as you were walking into a dark class room you seen your bully dead body but you seen a spirit going to which was your imaginary friend

Rohan possessed your Bully's body and turn to look at you with a smile