Reencarnación

ShenXian Yu was an exceptional warrior on the battlefield, able to dodge arrows and spears, but in the end he couldn't do anything with the knife on his back. In a world divided into three realities, the veil that separates underworld creatures, humans, and immortals is about to collapse... Lian lost the light of her. The streets of Shanghai are protected by the immortal Lian Hua, who hides as a high school teacher from the pain of his past. Together with his inseparable companion, the candy-addicted ferret Xue, he battles demons that crave yang. His monotony is disrupted by the appearance of a mysterious new student, too similar to his brother-in-arms, who has been executed. Yu searches in the dark. Haunted by ghosts since he was a child, he never thought that, in the end, he would be the monster lurking in the shadows. Yulong Shizui, is a teenager whose hands are stained by the revenge of a life that does not belong to him. His goal is to destroy those who betrayed ShenXian Yu, including his teacher, Lian Hua. However, they will be forced to work together to prevent the yin beings from enjoying their own eternal feast on the mortal plane. And along the way find out who Yu really is.