Kaiju. Giant beings that was once roam the Earth and always at odds with humanity. They exist to remind humanity of the balance of their world. Some appear to be benevolent, becoming a guardians for humanity, others have malevolent tendencies to cause destruction. One day, the kaiju vanishes from the face of the Earth. No one knows where they have disappear and all traces of their existence seems to be gone as if they were never exist to begin with. Centuries later, Quirks starts to emerge along came society of Quirks that gave birth to heroes and villains. In this age, kaijus are nothing more than children fantasy from stories and books. One boy discover kaijus existence starting to resurface and he became caught up in between worlds with him in the center. Will he be able to stop something bad from happening? or Will the society coexist with the kaijus or their arrogance will be their downfall?