Immortal Doctor and Poison King

[Excellent pet article, 1v1 is awesome] He was born in a hidden sect and was a young master that everyone respected. She hides her identity and becomes the unique poison king for revenge. Everyone in the world was afraid of her poison and called her a monster. But he regarded her as a treasure and took good care of her. In troubled times, when poison runs rampant in the world, there is only one person who will be by your side for life.