Your mom gave birth to you but she died after she give birth to you big bro hates you after that and he sold your soul to the devil for your mom to come back to life but you didn't die instead we see a demon (demon Scara) and now he's protecting you from your brother and bullies in school you study.

"Hey wake up it's time for school."

He says and he was shaking you since you were sleeping on your bed then you woke up then you saw him standing up beside your bed and he was looking at you.