Melancholy things

The task of returning the monsters who were supposed to be in the "hidden world" but ended up staying in the "present world" for various reasons is what is referred to as the "elimination of demons." By using accidentally found contact information, a high school student named Ashiya Hanae who was under the influence of a monster visited the store "Mononokean," where monsters are exorcised. There was Harusai Abe, the displeased shop owner. For some reason, Ashiya began serving the government. Here, the tale of the monsters and the demon union of Abe and Ashiya began.