The Weakest in the World

Su Mu, who is known as the weakest F-level demon slayer in the world, encountered a hidden BOSS during a mission. He accidentally obtained the system. Let's see how with the help of the system, he can step by step get rid of the title of the weakest in the world and become the strongest in the world! Ps: The pace of the first few chapters is slow, so please be patient and watch. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.