The Devil Wants To Live Off The Hero

The young master Saola had a bad character and lost his temper, and one maid was chosen to vent his anger. But the maid, Vivija, even if she wanted secretly to kill him in order to seek revenge for her exiled family, stopped involuntarily in front of the handsome and somewhat devilish youth. 
This youth Saola was a personage from a game (“Down with Prince of the Devils, Beautiful Girls and Braveheart’s”) in which the animation for the women was very good, together with their skills and characters. 
Currently in this game, Saola and his father Lucius, the prime minister, were the bad guys, and in particular Saola was the final boss, because he could awaken and merge with the Prince of the Devils’ bloodline, becoming the main villain to defeat. Instead Vivija was one of the heroines.
But unexpectedly Saola was now really alive, because a gamer transmigrated in the Saola body. 
When this “new” Saola discovered this strange “live” reality, he realized he was there in the moment of extreme danger because at the hands of the heroine Vivija…he could have to die. 
What could this Saola do, now? 
And also what path to choose…to go along in the game as the main villain or to transform himself into a hero?