From Now On, You Will Become a Demon and Not an Immortal.

"Legend of Mystery + Mortal + Systemless + Decisive Killing" Xu Xiaoman was originally an ordinary boy with worrying qualifications, but he was accidentally chosen to become a bargaining chip in the game between the two. Because of his qualifications, he has experienced the warmth and coldness of the human world. By chance, he received the inheritance of Heavenly Dao, practiced Qi, and gained incomparable power. He completed his transformation in the Land of Flowing Light, and from then on he was decisive in killing his senior sister, beheading his master, and destroying his sect. Use the mountains of corpses and seas of blood as your own skills. The hands are pinched to refine the Qi, and the feet are used to refine the body. From now on, I will become a demon instead of an immortal!