Questions: Entertainment & Arts

I was thinking of having the story be about traveling inside the human body (shrink ray) to fight diseases from the inside out. This would be a fresh change from fighting orcs and stuff. Believe me, I almost made it fighting orcs and dragons, but I remember years ago I had this idea, and I'm going to convert what i have done to the idea of fighting diseases inside the body. I'll need to do some research, but it should be pretty cool. There'll be battles both inside the body and outside the body.

What do you think?

list of genres here https://www.imdb.com/feature/genre/

Persona 3- The main bosses are shadows who basically represent each arcana of the tarot cards.
Persona 4- The bosses are actually your future party members or people who was kidnapped deepest insecurities.
Persona 5- The bosses are people who have accepted their desires of control and dominance in our society.