Coin's Edge: Reincarnated as a Extra Novel

He wasn’t a hero. He wasn’t even a villain. Just... an extra. A poor doctor was reincarnated into the world of a dark fantasy novel. He was granted two things: Knowledge and a legendary artifact. But that novel? A cheap imitation. Worse, a destiny had taken root within him, nourished by the very artifact he wished he had shattered the moment it all began. In a world where even side characters kill to survive, he must claw his way through betrayal, blood, and broken fates. If he were unable to rewrite his destiny this time, this world would become his new tragedy