He is best known for stories of ordinary people with plot twists of science fiction or fantasy elements.

[1] Some of his work has been adapted to television drama[2] and comics.

[3] Kwak has also written experimental literature including 140 Character Stories (140자 소설) posted on a Twitter account, which was featured on an EBS radio show's introduction.

However he also criticized his mystery novel, saying it is "too simple for a full-length book".

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