Ultimate: the Leader of the Right Path? I Am the Devil Who Has Come

Chen Lang traveled to golden time and space, The demon sword Thousand Blades that he brought with him turned into a peerless demon soldier, with a combat power index of 50,000, making him the number one in the world. He became famous as a demon in the world at a young age. But Chen Lang knows that he is just an ordinary person. Once he loses the magic sword Thousand Blades, he will no longer have any combat power index to be slaughtered by others. However, every time Qi and blood are used to activate the Thousand Blades of the Demonic Sword, not only will it not last long, but it will also put a huge burden on the body. If things go on like this, your life will be short. But the Black Dragon of the Force Judgment Office is watching covetously, and secretly there is Dugu Lang waiting for an opportunity. Just when Chen Lang was at a loss what to do, there was a sudden "ding" in his head. [The strongest righteous path system has been successfully activated. This program is dedicated to assisting the host and becoming the leader of the righteous path that everyone respects! "? No, buddy?" [Novice mission: Please go to Guava High School, serve as the teacher of the ultimate class, and start the path of a righteous young hero. "Wait a minute, I, Demon Lord, do you want me to be a young hero?" [Task reward: "Comprehensive Collection of Trendy Hairstyles", a top-notch internal skill disguised as a hairdressing book, which has the triple effects of healing, detoxifying, and improving combat power. "System, if you win, I will be the righteous young hero!"