The Games of Slayers: Isekai'd in another world as a reaper {Progression & gamelit}

Note: Rewrite in progress Money, fame, power, freedom, and more. These are things everyone wants. And those willing to die for those desires? They are simply known as Slayers. Rokun has a simple desire, power. Can he become strong enough to get his memories back and endure the hell that the world of reapers brings forth? (Editing was done to chapters to fix grammar and style due to feedback. Grammar and style should be mostly flawless now.) What to expect: Characters with twisted morals and values. A main character whose morals and values become twisted over time. A main character that starts off underpowered. Deaths of established and developed characters. A lot of mystery. Themes that may be uncomfortable to some. Overpowered characters later down the series.