Ok i have an idea. Since regressor stories have been on the hype for quite some time and are getting less original. I thought of a story like that but with some originality. Here goes we have our typical regressor whos died after the world went into chaos and monsters appeared. He dies and gets reincarnated into his younger self one day before the apocolypse starts. But wait.. the MC is the bully who bullied the regressors old body for 3 years. And with each death he travels back to time.