The Extra Wants To Live

Lucas Voss was a normal adult in his late twenties.He doesn't know how or why but he got transmigrated as an extra inside of the novel he read till 5th volume.The problem for Lucas was that his life was in danger as soon as he entered the novel.Why?Because Lucas was transmigrated as the 4th Prince who is an extra and was about to die with an Illness that couldn't be cured.Not only that novel he transmigrated into was 'Cold-Blooded Emperor Rules.'The protagonist of that novel killed every member of the royal palace to become emperor of the empire.How will Lucas survive?Will he die like the extra that he is? or will he fight against fate to survive in this cold-blooded novel and become more than an extra?The only way to know is it read this novel!