[Ombrenuit]

I thought it was the most beautiful piece of film I've ever seen

Is it safe to say that

Spoiler:

Bird Humans are aliens, and when they say Shin was a bird human after all...it means that Shin was an alien, a being from space, all along. Could this explain the flashbacks in the beginning in a new light? When they say the beings of space came...he was one of the immigrants?