A Wind Named Amnesia (1990)

A wind has swept the Earth taking all the memories from everyone. No one knows who they are, how to speak, or how to use the tools of modern civilization. Two years later a young man who has been re-educated travels across America on a mysterious journey.

A Wind Named Amnesia is an anime movie featuring Kazuki Yao and directed by Kazuo Yamazaki.

A Wind Named Amnesia is currently streaming for free (ad-supported) on Cineverse, Freevee, Pluto TV, Retrocrush, The Roku Channel and Tubi TV and it's also available on Crunchyroll Amazon Channel and Viewster Amazon Channel.

It is also possible to buy A Wind Named Amnesia on Amazon Video.