Daily Rewards! Transmigrating into a novel as a side-character!

After an unexpected heart attack, a devoted reader awakens in a startling new reality—reincarnated as Adrian Blackwood, a mere side character in the very novel he had criticized. Condemned to a brief existence as a stepping stone for the protagonist, Adrian grapples with the bleakness of his fate in a world where only the strong thrive and magical beasts roam. Just when despair threatens to consume him, a mysterious system activates, offering daily rewards that could change everything. With the acquisition of a powerful vampire bloodline and unique abilities, Adrian seizes the opportunity to rewrite his destiny. Armed with knowledge of future events and newfound strength, he is determined to defy his role as a disposable extra.