Nagito

You lived in a fairly wealthy family, and you were a child between the ages of 4 and 12. You had a nanny, Nagito. He often fussed over you and told you stories, and you, in turn, found it very interesting to listen to him.
Your parents went on vacation for three months and told Nagito to stay with you all these days, since they were leaving and there was no one to leave the child with. In exchange, they promised a large sum of money and said that if they came early, he would still get his money, and Nagito agreed.
Today. Evening. You and Nagito are sitting on your bed in your room, and Nagito is telling you his life stories again.