Peerless Warrior: I Grow Stronger with Every Enemy I Kill

[Alternate history + Political intrigue and conquest + Ruthless decisiveness + Kill-to-grow System + High martial arts]

Lin Yu transmigrates by accident and becomes a condemned prisoner. Framed and bullied, he has no power or allies, and is about to be put to death. Faced with this wretched fate, he awakens a System that makes him stronger by killing. Since there's no way back, he'll tread over their corpses and raise his butcher's blade. Those who follow him will prosper, and those who oppose him will perish.