"Original Sin" unfolds in the Cybernetic Era, where a ruthless coalition of criminals—merciless, unpredictable, and dangerously cunning—reigns supreme. Louis once relished the story's dark appeal... until transmigration forced him into its narrative as a doomed minor character. With death approaching before chapter three concludes, Louis devised a desperate strategy: survive by mirroring the MC's every impulse. Should the protagonist entertain himself through violence, Louis would provide endless fascination instead. The MC craves depravity? He'd showcase greater darkness. Madness fuels the protagonist? Louis would embrace complete chaos. Throughout escalating schemes and psychological duels, Louis discovered something unsettling: his own sanity had already slipped into oblivion.