After Becoming a Real Person, the Medical Student Decided to Save Lives and Heal the Wounded

I, Pingyuan, cosplayed a character called Zhenren under the advice (coercion) of my female classmate. But who would have thought that I would actually travel to the cursed world! Even if I traveled to the cursed world, why would I travel to the minute before I killed Nanami Kento! Although I was panicking, I decided that as a doctor, I would save lives and heal the wounded! Intention: to turn things around