My Cultivation System Runs on Karma

He was once the most feared assassin in the martial world—a blade that killed without hesitation, a shadow that left no survivors. But when Jin Mu-Kang regresses, he awakens a cultivation system unlike any other—one that grows only through good deeds. Save lives. Show mercy. Protect the weak. Every act of kindness makes him stronger… while every drop of blood threatens to erase him from existence. There’s just one problem—his past is drenched in sin. The system reveals a cruel truth: the karma he earns isn’t a reward, but a debt. Every life he saves is merely repaying the countless lives he once took. Fail to balance it, and he won’t just lose his power—he’ll vanish entirely. Now hunted by his former comrades, distrusted by righteous sects, and constantly tempted by the ruthless strength he once wielded, Mu-Kang is forced to walk a path he was never meant to follow. 𝗜𝗻 𝗮 𝘄𝗼𝗿𝗹𝗱 𝘄𝗵𝗲𝗿𝗲 𝗺𝗲𝗿𝗰𝘆 𝗶𝘀 𝘀𝗲𝗲𝗻 𝗮𝘀 𝘄𝗲𝗮𝗸𝗻𝗲𝘀𝘀 𝗮𝗻𝗱 𝗸𝗶𝗻𝗱𝗻𝗲𝘀𝘀 𝗶𝗻𝘃𝗶𝘁𝗲𝘀 𝗯𝗲𝘁𝗿𝗮𝘆𝗮𝗹, 𝗰𝗮𝗻 𝗮 𝗳𝗼𝗿𝗺𝗲𝗿 𝗸𝗶𝗹𝗹𝗲𝗿 𝘁𝗿𝘂𝗹𝘆 𝗯𝗲𝗰𝗼𝗺𝗲 𝗮 𝘀𝗮𝘃𝗶𝗼𝗿… 𝗼𝗿 𝘄𝗶𝗹𝗹 𝘁𝗵𝗲 𝗱𝗮𝗿𝗸𝗻𝗲𝘀𝘀 𝗼𝗳 𝗵𝗶𝘀 𝗽𝗮𝘀𝘁 𝗱𝗿𝗮𝗴 𝗵𝗶𝗺 𝗯𝗮𝗰𝗸 𝗯𝗲𝗳𝗼𝗿𝗲 𝗿𝗲𝗱𝗲𝗺𝗽𝘁𝗶𝗼𝗻 𝗶𝘀 𝗲𝘃𝗲𝗿 𝗰𝗼𝗺𝗽𝗹𝗲𝘁𝗲?