In the World of Cats

In the 23rd cycle of the earth after the disaster, natural disasters wiped out 90% of all living things. The remaining scientists discovered that some animals will eat plants that have recently been exposed to gray rain. It was found that antibodies can be formed in it for a short period of time to eliminate toxins and lament the power of nature. Only a few "old" humans survive by relying on machines to extract pharmaceutical factors from plants...