Demon Lord, He Insists on Raising a Cat

The soul of a medical master traveled through the world of immortality and turned into a cute cat. By some strange combination of circumstances, he was picked up and taken home by the most ruthless villain in the book, the King of Demons. I thought my life was in danger, but I found out that this murderous demon king was actually a "tough man with tenderness" who had no resistance to furry animals. In order to repay the kindness of taking her in, she secretly searched for a medicine to detoxify the demon king who was poisoned by a strange poison, but unexpectedly discovered a shocking secret: the so-called elders from well-known and upright families were the masterminds behind smearing the demon clan and provoking war! The "righteousness" and "evil" of the past have been completely reversed. She sneaked into the enemy camp as a cat and joined forces with the original male and female protagonists in the book to expose the elders' conspiracy. In the end, the medical genius joined hands with the demon emperor to stage a counterattack legend of "fighting poison with poison" to bring order to chaos. When the cold devil expresses his sincerity, how should this time-traveled meow-type medical fairy make a choice?