Studying Medicine Can't Save the World [Crossover]

The main story is complete. After being reborn, I once again made the Hippocratic Oath. "I will practice medicine with purity and holiness." But I never imagined that the people around me weren't human. Some were swords hired by my family under unfair contracts. One became my housekeeper, and another became my junior. Some were patients I met at work. One asked me whether I wanted to destroy the world, and another said I was his partner and hoped we'd save the world together. Just as I was starting to doubt myself among a group of abnormal people, I met a normal middle school student. But that all fell apart when I saw him use his superpower to deprive his opponent of all five senses at the national tournament. This is all a lie. There are no normal people in this world. This story will be moving to a paid platform on November 4, with a 10,000-word update then! Thank you, lovely readers, for supporting the official release! 1. There won't be any serious medical content. Please read the author's note in Chapter 1 before starting. 2. There are lots of alternate-universe and original settings, so proceed with caution. 3. There are characters from Touken Ranbu, Prince of Tennis, and Katekyo Hitman Reborn. There's a bit of everything, just no normal people. 4. Please don't compare rankings. 5. If anything is similar, then you copied me. Theme: