Mushikago no Cagaster plot
At the end of the twenty-first century, a rare disease called "Cagaster" began to infect the human race. In the year 2125, thirty years after the discovery of Cagaster, the young exterminator Kidou finds a dying man. His infected wounds were caused by the bloodthirsty insects. The man entrusts Kidou to his daughter Ilie, and asks him to find the girl's mother.