This is Fearless

In a future where humans have all forgotten how to speak, a survivalist starts getting strangely attached to the man she has captured.

Miyama Akira is a movie director in his 60's. In the past, he left his hometown to chase his dream. When he learns that his friend, who used to talk about their future, died, he goes back to his hometown for the first time in decades. While he walks along the streets there, he thinks about the life of his late friend and gets inspired to write a script about him.