The Forbidden Demon Swordsman's Adventure in Another World

A long time ago, the demons on the continent of Ovalun attacked the humans in large numbers. When the situation was about to be desperate, the person who led the people to counterattack was a brave man. Later generations called him the King of Knights... As time goes by, the past becomes dusty. Li Ang was suddenly transferred to this different world. He also inadvertently accepted the inheritance of the Knight King, But... Something unexpected happened. The undercurrent of the continent, and Li Ang who suddenly came to this world, What stories will come out of the collision?