I recommend " The Legendary Sword Immortal " to you. It's a light novel, a derivative doujinshi novel. The story was about Long Xuan, the Sword Immortal of Mount Shu, who was struck by lightning when he snatched the Taixuan Sword Scripture, one of the Four Books of the Heavens. However, he was reborn in the Immortal Slaying World. He cultivated the Dao of the sword, killed demons, and changed the fate of many people. He also unveiled the secrets hidden in this mysterious world! I hope you like my recommendation.π