The story is about a girl who landed a job as a human ambassador for the fairies in a setup where earth population is mostly made up of fairies. The last trailer showed a glimpse of what the Fairies looked like but this time they put up the human characters which will participate in the show.
Anyway just a Heads Up that Jinrui Wa Suita Shimashita will air this Summer in Japan! Will update you again when we hear a thing about the anime.