Dogs, cats, rabbits, tigers, and foxes exist in this world. Everything was chosen in the past and nothing has changed since.<br/>…<br/>Is it true that nothing has changed?<br/>[Mutant] A 'breed' the world has ignored and refused to accept. To those who justify their beliefs and kept their eyes shut, they are none other than existences that go against the 'rules.'<br/><br/>This story is about those whose identities are mixed.