Past-Life

The past-life is unknown, nobody knows if it's real. Nobody knows if they had one or more, but people say that you have 9 lives and your age is the number of life your in, if your age passed Nine, you're on your last life. Seven different people who really doesn't know each other, also doesn't know they have a past life. It may be bad, it may be good. But the problem is, what if you got back to your body in your past life but your soul is your soul on your current life?