I Am a Parasite in All the Worlds

Zhang Yang obtained the Parasitic System of All Realms and was able to travel to all heavens and all realms. It parasitizes in other people's bodies and becomes a venom-like life that can continuously devour other people's flesh and blood to strengthen itself. In order to become stronger, he chose to seduce the host to cooperate with him. When he became stronger, he forcibly controlled the host's body and transformed into a great demon, swallowing all living creatures until he swallowed the entire world. Some people want revenge, some want imperial power, some want to be admired by the world, some want to survive in death... In this troubled world, everyone has desires, and those with desires are easy to control. "Zhang Wuji, how can you not avenge your parents?" "Lin Pingzhi, you don't need to practice the evil-repelling sword technique. As long as you accept me, you can avenge Fuwei's whole family." … From then on, he continued to parasitize in all the heavens and all the worlds, swallowing all the worlds, and strengthening himself.