Ruby Rose felt Remnant didn't need her anymore. She didn't want to worsen the issues she had already caused, so she took advantage of the opportunity for a second chance at life. Unexpectedly, Ruby was completely transported to a different world instead. Also, why does she have wolf ears and tail now? At least she has a new family to help her in this new world.

My message was given, and though my efforts let my past self save himself from the fate I bore, my life came to an end. I could do nothing except wait for the inevitable darkness that would soon be my Hell as I lay with half of my body gone, yet I opened my eyes to the familiar weakness in my body, to the bright white room blinding my vision. Once I realized what happened, I cried.

Reincarnation is something that Rudeus Greyrat is quite intimate with. After all, he'd been given a second chance to make up for all of his first life's failures. So when his second life ended, he thought it'd be all over. To his surprise and consternation, he's found himself reborn again, in yet another new world. Now what?