Original Japanese version with English subtitles. After years of declining birth rates, the remnants of humanity are forced to give up their territories to the faeries - small, ten-inch tall super intelligent creatures who have taken advantage of the apparent ecological niche. As a mediator between the two species, Watashi gets a first hand look at the rift between human and faerie, one that won't be overcome too easily. With a job to do and no idea how to do it, Watashi's crash course in willpower will begin in Humanity Has Declined.