Kaiju

Yuriba is an island in the magical realms between the worlds, but even to it there are creatures of myth, of monsters, of mayhem. To the average immigrant they might seem things out of a movie or fantasy, or great imagination, but the native of the island knows otherwise.

There are things that go bump in the night. There are things that bump the night back. There are things which makes the realms quake. Monsters are real.

Giant creatures come in all shapes and sizes. What they are all, regardless of origin and intent, are threats. Whether they are giant monsters whom the mere stomping of their feet across the ocean floor causes tsunamis, psionics that are intrigued by the existence of the island and hone on it, giant creatures from space and the underrealms do exist.

Giant monsters are creatures with powers from myth, beasts the likes of which in the old tales the Goddesses would have locked away that in the modern eras do walk the pathways between the worlds. Magic is difficult against them due to their raw power and age. They are forces of nature, not so much as to fight as to be redirected.

The highly rare Kaiju might only threaten a realm once in a century or a millenia, and they might not even acknowledge it's existence, but by their mere presence they are disruptive to the island itself whether it be by raw power or just the fact they are ancient things that make women cower out of instinct and respect.

They are giant creatures. They are monsters. They cannot be contained. But they can be sent away, shambling in much the same way they came.