Kushina also looked at Minato, hoping he would say something in Naruto's favor.
But Minato sided with Liao Wu. "Kushina, I think Liao Wu is right!"
"Minato, you—"
In the original movie, when Naruto and Yamato finally returned to the future, Minato sealed away all their memories of one another.
Minato belonged to the Conservative Faction. He already knew Naruto was his son, and had probably even deduced that he and Kushina would die young.
Yet he still sealed those memories away.
The past was the past, and the future was the future. Failing to keep them clearly separated would have terrifying consequences.
After an argument, they finally decided to seal Naruto's and Yamato's memories.
However, Liao Wu would not perform the sealing. Instead, Minato would use a Sealing Technique to seal away everything Naruto and Yamato had experienced in this era.
Yamato desperately wanted to refuse. He was a Leaf Ninja and put the Leaf Village's interests first. With this intelligence, the Leaf Village could get ahead of everyone else.
For instance, they now knew that the leader of the Akatsuki was Nagato and that he possessed the Rinnegan.
Before Nagato attacked the Leaf Village to capture Naruto, they could gather the village's ninja and launch a surprise attack on Amegakure.
Even if they could not defeat him, they could still tell Nagato that the Moon Eye Plan was a fraud.
That would turn him against Obito or Black Zetsu.
That was the power of an information advantage.
But Yamato could not preserve his intelligence now. Minato had prepared a sealing array to seal away Naruto's and Yamato's connections to this era.
Once the sealing was performed, Naruto and Yamato would forget everything here.
Kushina held Naruto in her arms. There was so much she wanted to tell him.