Starting Over with SSS class: OP Yandere Won't Let Me Die

System, monsters and gates were just the opening act. The real war arrived later and wiped out humanity, but he still managed to end it. So why did she reset? It turned out, this bad ending, where everyone died, had been orchestrated by someone else. A regressor. An obsessed woman with only one objective in mind: to keep him alive. “My life is not worth billions of others...” Wielding the power of death had made him value life more deeply than anyone. So he killed her, and used his class ability to steal her skill. Now, he would be the one to restart the timeline, to become a fake regressor. Rowan set out with a single goal: save the world without sacrifice. Something even a regressor who had spent centuries trapped in a time loop couldn't do. Is there really a chance he can pull it off? --- What to Expect: -A strong, good-hearted MC worthy of a true Yandere's love -Gun, lot of GUNS -A Yandere who is stronger than the MC -No harem (and they would be lucky, because the regressor will kill anyone who even dares try) Inspired by John Wick and Solo Leveling.