Entropy could go in the opposite direction in which order happens from disorder. As far as aging the biology would be an urge in the body to age backwards. So for us time goes stronger in the arrow direction and weaker in the opposite arrow direction. In some other reality the opposite would be true.

I had a fictional girl who strived to become a woman, only to become a hag, I thought Bill Hole was crazy about her, but he was staring at a reflection of her in the window, in a mirror, till a bird smashed through, it was luck that saved him, and nobody knew the trouble he went through, nobody knows much now, they are busy doing calculus.

Never can be done.

I felt a blow to my head, then the lights went out, I was alone, almost outside, but not quite, I was spinning in space, blood on my face, why was I here, what was I doing, couldn't this madhouse end.