120 Four Mythical Beasts

It was a very sudden event as before the dawn comes, the people who had even a bit of sixth sense suddenly felt that their whole body was engulfed by something invisible, some kind of invisible force that can't be explained or seen by naked eyes. Even as some from the supernatural side tried to investigate the cause, it proves to be a fruitless effort as nothing solid was found. But they did find something questionable, scientifically, they find that the whole district was within some kind of magnetic field for but a single moment. 

No one knows how it appeared and the reason why it disappeared afterward, but one thing that they did know was that something had happened on that day, something unknown. Some said it was a warning for an earthquake but after a few days passed of nothing of such happening, it was dismissed. And just like that, the incident was soon forgotten by many but a certain group of people.