Oh man, I was sitting there thinking “how can the bakenezumi fight the humans when they’re so busy fighting each other?”, but now we hear that the entire Giant Hornet army was annihilated from Satoru. All we have left is the more “humanized” colony…meaning that it’s highly likely they’re try to “replace” the humans…possibly thinking that they have gone soft or become corrupted.
This combination of ending and preview is very suspicious. There’s the link with Maria and Mamoru again, but the ending heavily features Maria, suggesting that she’s still alive. Was she involved in the destruction of the Giant Hornets? If so, was she trying to help destroy them or was she trying to save them? It’s not like we have any idea what she’s been doing for all of this time.