Creepy Pharmacist: All My Patients are Horrific

Briefly about Creepy Pharmacist: All My Patients are Horrific manga:

Will this treacherous darkness swallow you up, or will you survive as a unique existence? Lin En accidentally transmigrated into this monstrous world. As a rare human doctor, every one of his patients was moved by his “gentle” treatment and “sincere” service! “Anesthetics? Maybe next time.” “My knife is quick, it’ll be over soon~” Welcome to Bloodsaw Pharmacy, we will serve you wholeheartedly.