Well, perhaps there could be a twist where the dog wasn't actually dead but in a coma - like state and was being used in some sort of illegal experiment. And the savant child discovers this through his extraordinary intelligence by noticing small details that others missed, like some strange marks on the dog's body.
Maybe it was the neighbor who was jealous of the dog's owner. The savant child might find evidence like the neighbor's footprints near the scene of the dog's death and some items that belonged to the neighbor that were found on the dog's body.
Maybe the child turns out to have some special power that the creepypasta was unknowingly drawn to. As the story progresses, the creepypasta realizes that adopting the child has put both of them in danger as there are others who want to use the child's power for their own evil purposes.
One possible plot could be that a dog finds a strange ball of yarn in the forest. Every time it tries to pick the yarn up, the yarn seems to move on its own a bit. The dog is both curious and a little scared. As the dog continues to interact with the yarn, it leads the dog to a hidden den in the forest where there are other animals waiting. Turns out the 'yarn' was a sort of signal or lure set by the animals for help, and the dog unknowingly followed it and became their savior.
Maybe Naruto isn't actually dead. He could be in a hidden dimension or under some powerful genjutsu that makes others think he's dead. Another plot twist could be that his death was faked by an enemy to create chaos in Konoha, and Naruto is actually on a secret mission to expose the real threat. Or perhaps Naruto's 'death' triggers a hidden power within him that resurrects him in a new and more powerful form.
One possible plot twist could be that the Stark has to face the opposition from his own family. Since the Children of the Forest are an ancient and somewhat mysterious race in the lore, the Stark family might be wary of this union. Another twist could be that the Child of the Forest has some hidden powers that are unleashed as a result of the marriage, powers that could either save or endanger the Stark's homeland.
Perhaps the nin dog is actually an ancient and powerful being that has been sealed in the form of a dog for centuries. Naruto getting it could be part of some prophecy. As Naruto trains with the dog, he unlocks the dog's true form and powers bit by bit. This could involve him having to face some really tough challenges, like ancient curses or powerful enemies that are also interested in the dog's power.
The main suspect in a mystery story has a perfect alibi that the detective can't break. But then it's discovered that the suspect has an identical twin that no one knew about. The twin was the one who committed the crime while the suspect was creating their alibi. This sudden revelation adds a whole new layer of complexity to the mystery and forces the detective to start their investigation anew.
First, build a clear framework of the story and characters. Analyze the motives and opportunities of each suspect. Second, notice any inconsistencies or strange behaviors. Finally, keep an open mind and be prepared for unexpected twists.
One possible plot could be that Olivia is a long - lost relative of one of the main characters. She has been surviving on her own for a long time and when she reunites with the group, she brings with her a new perspective on survival. Maybe she has discovered a way to repel walkers that the group has never thought of before.
One plot twist could be that Harry is actually protecting Ginny and the real father. He might know some dark secret about the father that would put them in danger if it were known, so he pretends to be in the dark about the situation.