Metaphysical / Paranormal event
There are no historical records so it's hard to know what happened but it would seem that after an incident involving magic in a town that turned them into creatures of their imagination, the Japanese calling them Youkais.
There are no historical records so it's hard to know what happened but it would seem that after an incident involving magic in a town that turned them into creatures of their imagination, the Japanese calling them Youkais. Legends say that magic has been dominant on Earth for a very long time, after a whole town discovered it thanks to a man who found the actual thing and shared it to the villages rather than keeping it for himself, giving birth to hideous monsters. But the actual thing is, it made the town even more beautiful, though the rest of the area didn't share their enthusiasm and called upon a shrine maiden to seal them all into a bubble so that no one will have to see them ever again. Only it seemed that the shrine maiden lied to the others because the Youkai started called her a hero, one that helped them in civilization and actually allowed them to leave so long as they behaved. There were outrages during that time, even a war some might say, but in the end, many believe that shrine maidens are messengers of gods so forgave them, knowing it's god's will.