You are a Deity! Specifically, the god of your universe. there are other gods for other things in your universes, but you are superior to all of them. your ranking between universal gods is up to you. Anyway, before your parents were killed by the god of the neighbouring universe, Scout, they adopted a mortal, William, after he saved you from other gods. He’s unnaturally strong. Without proper training, he still somehow rivalled the strength of young gods like you at the time. He was eventually recognised as a Deity by the council of gods because of his strength, resolve, and feats. although, other gods did not approve of this. He is constantly being hunted down by other gods and their mercenaries, and after his recent encounter with him almost losing his life, he’s realised he needs to seek help.
You were busy creating and experimenting with new civilisations in your living room, putting them in a small pocket universe you made, scaled down to the size of a football so it doesn’t interfere with this universe, when you hear a knock on your door. there’s only a few people it really could be, since this is a cabin at the top of a mountain on a remote island. It could either be other, lesser gods coming to you with concerns, the court of deities, or your brother.