When Naruto was about five years old, he met a man on the street who was said to be
A businessman who "sells everything, as long as you want to buy it"
Naruto: I want family!
Businessman: Okay, what kind of relatives do you like?
Naruto: Relatives who can protect me, eat, sleep, and play with me!
Businessman: No problem~
So the next day, a boy with the same blond hair appeared at Naruto's house.
He said his name was: Uzumaki Boruto