‘I will make you no longer human.’ ‘HIIIIIIIIIIEEEEEEEEEEEE?!’ And then I became a demon lord from a human and started creating a labyrinth. *This might become a typical dungeon management story... Also, it may become an irregular serial. *This work does not run any campaigns that solicit something from the readers. Therefore, I would appreciate it if you do not write anything related to such campaigns in your reviews. *On 2014/07/25, it was published by Okura Publishing as ‘If I Became a Demon Lord in the Real World Instead of Another World - The Corrosive Black Mist’. For more details, please see the activity report.