The Chairman of Pharmaceutical Company is a Poison King

Three centuries have passed on an Earth now veiled in mana, a world where I, a 'Mana Rejector,' found myself cursed – mana, the very essence of life, was a deadly poison to me. As I languished, awaiting my inevitable end, unable to even Awaken, a miracle occurred. I connected with an identical soul from another dimension: the soul of Dang Gunak, the Absolute Poison Demon, the undisputed ruler of the Murim world. Now, his power flows through me, a dangerous fusion of two worlds. Can I master this potent, poisonous gift and survive in this mana-infused era? Dive into chapter 1 to witness the beginning of this extraordinary transformation!