Details: Currently ongoing. Also known as 메디컬 환생.
I’m tempted to say this is an isekai since it’s core concept involves the trope of being reborn into your younger self, but this is clearly a medical drama. What I really enjoyed about this comic was how educational it was. I don’t know of any other fictional story that spent so much time going through details of the medical field, specifically, details about medical school in Korea. The author clearly spoke to some actual doctors before writing this.