The Chairman of Pharmaceutical Company is a Poison King

300 years in the future, Earth was engulfed by mana. I was a 'Mana Reject'—someone whose body treats mana like a lethal poison. Unable to Awaken, I was just waiting to die. That is, until one day... My soul connected with its counterpart from another dimension. The absolute master of Murim, the Absolute Poison Demon... Dang Gunak.