Fan Interview (TV Program)– Kishimoto confirms the scarf plot in The Last is based on his own personal experience with his wife. The dialogue is as follows:
Fan: Kishimoto-sensei, did any of your own romantic experiences make it into the movie?
Kishimoto: A little bit.
Fan: Oh, where?
Kishimoto: Well… giving the scarf…
Narrator: This time in Naruto, a scarf knit by a girl has become an essential item.
Kishimoto: The staff was gathered and we were making the story, (they were saying things) like “a scarf in this day and age?” “People do that?” (I said) “I’m sorry, I got a scarf that my wife knit,” and everyone got quiet… (Translation by honyakusha-eri​)

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