Horrible Longevity

I was drinking tea in the mall, and someone stared at me. I thought that look was too scary, so I wanted to run away. But the man said: "You have been borrowed from someone, and the person who borrowed your life is already terminally ill." "If you don't change it back, you will be in the advanced stage in five days and will be unable to recover." Good guy, I rushed to the hospital for a check-up, but I didn't expect that I would deteriorate to the middle stage...