The Novel's Extra summary: Hajin Kim finds himself in a predicament that one might think is ideal: waking up in a world of his own creation. However, this turns out to be his worst nightmare. He is puzzled as to how he ended up in his web novel, portraying the role of a minor character. Despite this, he has no choice but to proceed with the story. Luckily, as the writer of this perilous universe, he is familiar with its workings. Nevertheless, when inconsistencies arise in the storyline, Hajin realizes that things are not as simple as he thought at first.