Humanity Has Declined - S01

Due to birth rates falling for many decades, human civilization is nearly extinct. Only a few humans are left, surviving in this post-apocalyptic world on what previous generations left behind. Earth is now ruled by fairies, tiny creatures with highly advanced technology, an obsession with candy, and no concern at all for human safety. A young girl who has just finished her studies returns to her hometown and is appointed as an official United Nations arbitrator. Her job is to act as a link between mankind and fairies, reassuring both sides that the two races can live together in peace. She expects the task to be simple enough, but controlling the disasters caused by the oblivious fairies in their pursuit of candy will take far more effort than she first thinks.