I Become Stronger by Drawing a Sword

Wu Dao traveled to a world where demons were rampant, and humans could only survive by hiding in a protective shield. The world needs a savior, and he is Wu Dao who has obtained the "God-level Sword Drawing System". "You get the mission... Reward..." How about the Jidao Imperial Soldier? How about Super A Demon? Look at how he uses a broken sword and relies on infinite sword draw. Even if he is a god, he will only perish!