In a world where pet dogs and cats are humanized, who really owns whom?

Due to a declining birth rate, pets are being transformed into humanoid members of society. But are they truly human? Or are humans truly animals?

Taika tries out for the basketball team but doesn’t understand the rules of the human game. A love triangle starts to develop around Ao—or is it a quadrangle? And Anna, a mysterious catperson, threatens to blackmail Taika and viciously attacks a classmate. What is she after? And who is she really?