I was embodied in another world with features I invented

Jack is transported to a world resembling the medieval era, where magic and swordsmanship exist. He becomes the youngest son of the Liothan family—now known as Kyle Liothan. The body he now inhabits belonged to the laziest member of the family, someone who had been stripped of his title and sent to study at "Dawn Academy" in hopes of regaining the family name by becoming a knight. Kyle soon discovers that his "cheat" is a set of traits he had once written back in high school while trying to create a novel—traits that were mocked by everyone at the time. He never imagined that the attributes he gave to the protagonist of his rejected story—traits long forgotten—would become his real cheat in this chaotic world. In this new life, he vows to gain power, influence, and wealth—and to live it in the most enjoyable way possible. But… can he truly succeed? Especially in a world so turbulent, plagued with corruption, and filled with hidden dangers.