I Asked You to Win over the Monster School Beauty, but You Were Really Pretending

[Hot-blooded, high-burning, decisive and fast-paced plot flow] Jiang Fan found that the world had changed. The top idol turned out to be a vampire and held a concert just to transform 100,000 fans into vampires. The richest tycoon is actually a parasitic beast, and 80% of the world's wealth is in the hands of aliens. The head of state was possessed by a demon and started a war just to enjoy the pleasure of watching human beings kill each other. Human beings live like cattle and horses. The foreign race is superior, occupying resources, and domineering. "If you are not a member of our clan, your heart must be different. Ghouls, demons, blood clans, zombie clans, parasitic beasts... No matter what kind of alien clan you are, they all deserve to die!" "This is a world for humans, and aliens need to be eliminated!" Jiang Fan transformed into a foreign butcher and cleaned up garbage for humans. And he became the biggest beneficiary. Because Jiang Fan can gain blood bars by killing foreigners and enhance his skills. How can I become stronger without killing aliens?