Uchiha Yuka always felt that Naruto possessed a somewhat beast-like mindset ever since he was a child. Perhaps due to the long-term presence of Kurama within his body, his thoughts and senses were thoroughly feral.
Take, for instance, his persistence regarding Sakura and his obsession with Sasuke. If it were Yuka or anyone else, they would surely let the other person do as they pleased. But with Naruto, even after being beaten black and blue by Sasuke, he still believed that Sasuke had not left Konohagakure of his own accord, but had been forced into it.
If Sasuke were to tell him he did it willingly, Naruto would simply think Sasuke was lying to him...
Chapter 253