Creepypasta x Gender Nuetral! reader

A 6 year old child who is nicknamed Songbird, loves to sing everyday. They are very shy and would only sing to their step brother named Aurthur.
Aurthur comes home to see his parents dead, and wants to know what happened. That's when a realization hit him, where is Songbird? The 6 year old layed next to their parents, passed out. As soon as they woke up, Aurthur asked them a question, ' Do you remember what happened while I was gone?'
Later, a specific and internet famous killer showed up. He had medium cut black hair that was the complete opposite color of his skin. His eyelids and mouth were either cut or ripped. He wore a bloody stained white hoodie that matched perfectly with his black tight jeans. That was Jefferey Woods or Jeff the Killer.
He took the two to a place while telling Aurthur what happened on the rode. Soon enough, the two step siblings will face a mixture of events.