Time Reversal File

This is a story about a group of "Avengers." Some, driven by unresolved regret in their final moments, find their souls traveling back to the past, carrying their memories. Given a second chance at life, some choose to send their enemies straight to hell. Some, unwilling to accept a life of misfortune, carve out a new path for themselves. They are warriors fighting against the chains of fate.
I once tried to uncover the secret behind their time reversal, but I discovered that the stories around them were far more fascinating than the mystery itself…