False Regressor: Soul King Ascension [Litrpg, Regression]

The final boss fell. The world was saved. So why the reset? Because he and his partner sacrificed everyone in the world to reach this ending. Having thought this was the only way to win, Rowan was devastated by the outcome. But his partner had a secret. She revealed herself as a regressor, one who had reset the timeline hundreds of times to reach this exact ending. The ending where he lives. He begged her to try again, to find a path where others survived too. She refused. So he took matters into his own hands, killing her and using his Soul Reaper class to steal her regression ability. But she had activated it first. Still, due to a skill interaction, he was also pulled back to the beginning. Will he be able to save this world when someone with centuries of experience couldn't? --- What to expect. -Serious and straightforward MC -Soul Reaper progression with dynamic power growth -FAST burn, race against time -GUNS AND SCYTHE! -No harem