I'm not sure specifically as I haven't read it. But generally, it might be about a princess in a medical - related context. Maybe she has some special medical abilities or she is involved in the medical affairs of a kingdom.
Since I haven't actually read the 'medical princess light novel', it's hard to say for certain. However, it may tell the story of a princess who breaks gender norms in a fictional world. In a time when medicine was not an area often associated with women, she ventures into it. She could be dealing with a plague or some other medical crisis in her land, using her wits and resources to find solutions. She may also have to deal with people who oppose her for being a princess involved in such 'un - princess - like' activities.
Well, it could center around a princess who is interested in medicine. She might use her status to promote medical research, help the sick in her kingdom, or perhaps she has a journey to learn more about medicine and faces various challenges along the way. It could also involve political intrigue as she tries to implement medical reforms in a world full of power struggles.