The Contracted Demon Wasted His Life? but I Am Immortal!

[Pure cool + crushing + arrogance + killing + extreme + domination of demons] The devil invades and the whole people awakens. Everyone has the opportunity to contract with the devil and become a powerful contract magician to fight for mankind! But every time you use a demon's power, you have to pay a price. It can be as minor as headaches, nosebleeds, tooth loss... It can range from amputation, paralysis, shortened life span... As a time traveler, Xu Yan was very lucky to get a contract with an SSS demon - the Domination Demon! Able to control everything in the world, and even follow the instructions. It's a pity that the cost is huge. Even the lowest control requires sacrificing part of the body, and you will die within a few times, so it has attracted the ridicule of countless colleagues. But others don't know that Xu Yan actually has an immortal body and can reset his state every day to repair all damage. Feel sorry? Use demons to waste your life? All I have is life! Everyone was dumbfounded when they saw Xu Yan saying "Kneel down and commit suicide neatly" one after another, and then the demon immediately fell to his knees and committed suicide on the spot. It was impossible to resist the situation. "Not a buddy? You don't have enough life left? You're so mean!!!"