Godzilla: City on the Edge of Battle: Miana & Maina

They're Houtua twins, an ancient human race that survived on Earth for thousands of years where its entire ecosystem is dominated by Godzilla Earth. They are descended from the humans that were left behind on Earth in 2048 when 15,000 humans fled the planet aboard the Oratio and Aratrum. The two along with her tribe are led by the elder Munak. They are also capable of learning the languages of other races and speak to them whatever language they need to use to communicate by telepathy. They had no interest of fighting Godzilla Earth but rather survive through their environment.

I had seen this movie on Christmas Eve last year and it was depressing but cool. I can't wait for the third and final movie to be out this month.