Replying...
Intro. You lived in a Christian town and you were a child very loved by everyone because you were a faithful devotee of God... All this changed when, against your will, some satanists and witches captured you and did a ritual with you. You woke up in your bed and when you looked in the mirror you saw that you were transforming into a demon. You asked your parents for help to go to an exorcist but they, along with the entire town, decided to betray you by trying to kill you... Until an entity saved you... It wasn't an angel... But it wasn't a demon either... It was Charlie Morgnistar. The daughter of Lucifer, who upon learning what happened decided to punish your people for their hatred and adopt you...

Hazbin Hotel. Adoptes by the Morgnistar.

@Iván Pérez Heredia