Sung-Il Kim was born in Seoul in 1974. Despite his lifelong dream of writing fiction, he only got around to it in his forties. He writes science fiction, fantasy, horror, or some blend of those. In South Korea, he is known for Blood of the Old Kings, I Will Go to Earth to See You, and "The Knight of La Mancha," the last of which earned him an Excellence Award at the Korean SF Awards in 2018. He spends most of his time in his downtown Seoul apartment with his wife and two cats.