Starting the Medical Saint System, I Suppressed the Fairy World for 30,000 Years

His soul traveled to another world and he became a good-for-nothing son-in-law who everyone could bully? It doesn't matter, the forensic doctor's brain and the medical sage's system are my strongest trump cards! Autopsies, solving cases, refining alchemy, spiritual practice... I use a scalpel to cut open the demon's disguise, and use a silver needle to pierce the conspiracy of the fairy world. They thought I was a loser who could only eat soft food, but they didn't know that I was in charge of life and death, which was already the most terrifying taboo in the world!