Killing Tower

This is a strange world. The sky was covered with a layer of haze, and the air was filled with elemental energy. In the center of the entire continent, there stands a tall tower inserted into the clouds. Muge, who had read countless books, woke up in a dirty alley. Before he could figure out the situation, he was attacked by a supernatural assassin... "If you find a book that looks weird, don't open it, because you know what will happen." ——Mu Ge