In 2072, a far dystopian future, numerous developments have transformed the world, including the advent of artificial romance via AI. A company called Teratec Inc. has made it possible to create an artificial intelligence partner for people to love and care for. Similar to any other human, they can eat, drink, experience emotions (as they market it), and engage in intimate relations with their partners. This comes with a lifetime guarantee that they won't leave or pose a threat to their human companions.