Betsu ma: Betsu ni Iyarashi Imi Jyanaku Isshou ni Sun Demo Kamae wa Nai yo Margaret

It has been 300 years since mysterious blue mists started flowing out of the earth. All living things have become immortal and injuries heal instantaneously and sickness doesn’t exist. The aging process has stopped and creatures have stayed the same age since they were exposed to the mist. Paz