This is a series of images i made when i was young (and kind of horny /o/m/o/)

These images are rather extremely low effort, each image implies that some human 'Popped' out as a non-sapient animal with few or any memories of their past. The human get entirely replaced even in the memories of the other peoples, basically erasing even the memories of everyone in one swoop.

I like to think that the culprit is a witch or some goddess with divine power to rewrite the humans into mindless beast