Possessing Me: The Untouchable Outsider is a Manga/Manhwa/Manhua in english language, Manhua series, english chapters have been translated and you can read them here. You are reading chapters on www.mgeko.cc fastest updating comic site. The Summary is

This is an era where humans and mutated lifeforms coexist. Parasite spirits choose suitable humans to attach themselves onto, living off of them until they take control and transform their hosts into mutated lifeforms. Some of these beings reveal their violent nature, attempting to disrupt order. Qin Xi, who had been living an ordinary life, finds himself in a life-and-death situation. He should have died, but when he opened his eyes, he discovered that he was no longer himself. I’m alive? What happened to my body? Could it be that I have turned into a mutated lifeform…