I Became the Lousy Side Top

One day, Jaewoo found himself possessing a character inside of a story. And not just any character, but a lousy side top who rented out a room in a slum to the poor main character of the novel! He was fated to be killed by the main top part way through the story. So he made up his mind! He’s going to try his best to support the main character while avoiding the main top in order to save his life. Source: NU