Kim Dong-sik was born in 1985. After dropping out of middle school, he spent his twenties working at a foundry. He began writing in 2016, posting stories on an online community, through which he gained a great following of fans. Discovered by a publishing planner and company, the stories he posted on the online community began to be published as books. He made his literary debut in December 2017 with the simultaneous publication of his short story collections, The Gray Man, The Weakest Monster in the World, and Kim Namwu on the Thirteenth, after which he went on to publish a total of ten volumes of the Kim Dong-sik Collection, including A Conscientious Confession; I’m Sorry, but I Was Completely Fine; One Man, One of Mankind; The Essence of a Killer; You Can’t Fall in Love After Only a Week; The Octopus; and The Balancing Game, and a separate collection of short stories entitled A Successful Life. Now a major science fiction/fantasy author in Korea, he continues to write a diverse range of novels.