There is an unknown system that now generates some people as 'owners' or 'pets'.

It's pretty obvious. The owners just own the people selected to be their pet.

The pet will become a hybrid between a human and an animal.

Katsuki Bakugou has been selected as a Owner this morning, and he's thrilled.

As he was wandering the school halls, just then— he freezes-

He sees a pet in front of him,his pet,sitting down obediently,looking up at him with big emerald green eyes.