Extra's awakening: Leveling up with an OP talent copying system

Kyle suddenly wakes up in another world only to find out that he had been trasnmigtated into the very Novel he was about to finish. He transmigrated not into the body of the hero or villain not even a third rate villain that would usually appear twice in the whole novel. Rather he was in the body of an extra that wasn't even mentioned at all, an extra that was labeled talentless and useless