from Trash of the Count's Family (Manhwa)
Kim Rok Soo's soul was moved by the God of Death into the body of Cale Henituse: a minor antagonist from the novel The Birth of a Hero by Nelan Barrow. Before he transmigrated, he had only read the first 5 volumes of the novel. Therefore, he did not know for sure what happened after that. Cale Henituse's body was 18 years old when he transmigrated while his soul as Kim Rok Soo was 36 years old.

Trash of the Count's Family (Manhwa)
Beginning with the awakening of our main character, Kim Rok Soo, in a different world, he finds himself possessing the body of a minor villain inside of the novel The Birth of a Hero: Cale Henituse. As he tried to avoid being beaten up as in the original novel, his actions directly lead to the original plot derailing and he finds himself dragged into the center of many conflicts happening in the world. Set in a fantastical world with elements such as magic and dragons, Cale utilizes the knowledge that he has from having read The Birth of a Hero by using those knowledges and taking in future elements while uncovering a devious plot that connects everything.