Reincarnated into another world filled with beautiful women, demons, and magic, Lex got bitten by the demon queen when she tried to eat his soul. However, the poison didn’t work as she expected, and he was left to die. Surprisingly, he survived the venom and inherited her power. Due to their examination of him and curiosity, he was invited by a demon hunter organization to become one of them. But fate was cruel, and the venom took its toll on Lex’s body. As the days went by, Lex could feel the venom spreading through his body. Each day, he became more and more like a demon himself. In order to survive, he needed to find and kill the demon queen, but something was preventing him from finding her, who was behind it? “So all this time, it was you…”