Starting as a Transmigrated Villain by Getting Ahead of the Game

Looking for Stories Where the Protagonist Transmigrates as the Villain, Gets a System, and Can Brutally Kill the Hero

The protagonist transmigrates into the role of a villain and gets a Villain System. They can grow stronger by killing the original protagonist, and take the protagonist's fortune, equipment, techniques, and more. The protagonist, now a villain, is decisive and ruthless, but there must be a female lead and no harem.