Suddenly, man-eating monstrosities appeared—Aberrations.

Beings that appeared without warning, attacking people, destroying cities, and taking lives.

Aberrations are classified into five levels based on their danger level:

・Disaster-class ・A-rank ・B-rank ** C-rank** ・D-rank

The only ones who can oppose them are "Ability Users," who possess special powers from birth.

Ability users also have ranks based on their strength:

・Anomaly ・S-rank ・A-rank ・B-rank ・C-rank

The highest tier—'Anomaly'

A presence that cannot be measured by the world's common sense, observation, or calculation.

Their numbers are but a handful in the entire world.

It was a legendary rank, said to be capable of changing the tide of war alone, saving a nation, or even subjugating a Disaster-class aberration.

Despite possessing such power, there was one child who was still very young.

The child was elusive, always walking while clutching a black teddy bear.

The teddy bear's name was Bear.