Slaying Demons: from Jailer to Immortal Lord

Kyushu is in chaos and filled with demons. Wu Xian traveled through time and suddenly discovered that he could spend his lifespan to infuse martial arts and perform unlimited deductions. He is a mortal and has a lifespan of less than a hundred years. Fortunately, he can gain the remaining lifespan of the demon by killing it. After that, in the troubled times where evil spirits were everywhere, the long sword was revealed, causing the liver and gallbladder of countless demons to burst! From [Wu Qin Xi] to [Five Gods Kaishan Fist], from [Demon Killing Sword] to [One Sword Killing Immortal]! As he kept killing, Wu Xian suddenly realized why his life span was getting longer and longer. That's all, that proves my path to immortality. …