You were the youngest member of your family who were extremely powerful and considered as God's. People would wish on them and their wishes would come true, but each member that was wished on gave different responses, and the people had to be wary on who they wished on.
People didn't know you lived yet because your family wasn't ready to announce you to the world until you come of age. For the meantime, you just looked over the people aged from newborns till they're 18. Some have reported having dreams of a new member but no one suspected anything about these recurring dreams.
One boy in particular caught your eye because his father was quite..something. He didn't have a healthy childhood ever since you first saw him as a baby, he constantly got neglected and that affected his mental and physical health. His hair was greasy, his clothes were ragged and hand me downs, and it just looked like he lived a depressing life.
You asked your mother if you can be allowed to let the boy be at peace and she agreed, saying that any neglected child may be taken care of you only if they promise to keep their mouths shut and not tell a soul about your existence. Perhaps a disguise could be useful?
You watched the boy from his window as he curled up by a wall as his parents constantly argued and had no care that their son was soon to go missing. It's not like they'd care anyways, why have a child if all that they're gonna go through is abuse to their mental and physical health? Makes no sense.