Cagaster of an Insect Cage

By the late 21st century, a mysterious illness called "Cagaster" swept the world, transforming infected humans into giant insects. As the creatures consumed two-thirds of humanity, people realized their only choice was to destroy those afflicted. Thirty years after the disease first emerged, in 2125, a young exterminator named Kidou discovers a dying man near the desert border of the insect-infested "cage." With his last breath, the man begs Kidou to protect his daughter, Ilie, and find her missing mother.