Well, 'The Greatest Show' is not rooted in reality. It's a purely imaginative work crafted for entertainment purposes. There's no factual basis behind it.
We can show that mother's love is the greatest love story by simply observing a mother's daily actions. She wakes up early to make breakfast, packs lunches, and takes care of all the household chores while still finding time to listen to her children's problems.
Typically, the decisions about who lives, who dies, and who tells the story in an animatic are made by the team of writers and animators. They consider various factors such as character arcs, the overall theme, and the intended impact on the audience.
There were a few novels recommended by the greatest villain. Among them,"Wearing as the Greatest Villain in the Book (GL)" and "I became the Greatest Villain (Wearing the Book)" were two works that could be considered. However, the other search results didn't provide more recommendations about the biggest villain's time-travel novel. Therefore, I am unable to provide any more relevant information.