I Turned into a Parasite That Only Eats Protagonists

I turned into a parasite, and my life cycle is only seven days. In my mind, I have a goal for evolution: to parasitize martial arts prodigies. As long as I kill them, my evolutionary genes will increase, allowing me to evolve. My instincts tell me that if I keep causing trouble, I might be able to become human again. So I'm going to devour every protagonist.

This novel and its characters are entirely fictional. Any resemblance to actual people or events is purely coincidental. Do not imitate.