Pests are rampant.

The story of rampant pests talks about how human beings destroy the natural environment through overdevelopment of natural resources and excessive interference with living beings, causing bugs to mutate and run rampant, attacking humans. Humanity ultimately regrets bitterly the bitter fruits it has sown. The creatures in the world that make people's skin crawl are often some inconspicuous little insects. But if these small insects were to grow infinitely in size, what kind of panic and chaos would it cause?