Invincible: I Become Stronger When I Make People Angry

Once upon a time there was a child who had a bad temper. Accidentally acquired the Anger System. As long as you accumulate anger points, you can become stronger, and you have reached the pinnacle of your life. However, there was a peerless strong man who had been in seclusion for three thousand years and felt that he was invincible, so he got into trouble. He raised his arms and shouted: "Liu Jiajun, where are you? Charge him!!!" This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.