The wacky 4-koma adventures of Katatsumuri, a snail girl who goes to school.

Year 2130 – after the third world war, large contaminated areas known as "Blackspots" formed all over Japan. Large Walls were used to quarantine off these "Blackspots". In time, signs of inhabitance appeared within these wastelands. Among the survivors who had been abandoned inside the Blackspots, labeled as "those who were unneeded", came forth possessors of uncanny abilities – Fire, wind, brute strength… they were defined by their supernatural abilities. Others, fearful of their powers, expelled them and named them - - - Needless!

Oogami is a detective by day and exorcist by night, solving cases and hunting spirits together with his ghostly assistant Kazari. One day, a mysterious package with horrifying contents arrives in Oogami's mail, the only clue to its sender being the name of a remote village: Shirasunamura. [Wikipedia](https://ja.wikipedia.org/wiki/%E7%99%BD%E7%A0%82%E6%9D%91)