〝ペットのヒト化〟を推進するようになった近未来日本。ある日、学校帰りの亜緒は父親の変死体を発見し…!?
As birth rates decline, in an effort to increase the total population of Japan, the country has implemented a pet-humanism policy as more and more owners “humanize” their pets. Having them become members of society Japan begins to experience a hike in economic growth as well as an increase in crimes committed by these “dogmen” and “catmen”. Amid such social unrest, what could be of bigger concern to one cynical high school girl named Ao?
