Dokja is an office worker who read the novel "Three Ways to Survive in a Ruined World". The world of the novel suddenly becomes reality, and Dokja becomes the only person who knows how the world will end.
For me it's the other way around, at the beginning it was fascinating and the characters were very interesting, but the more we advanced in the story, the more disappointed I became with the events.
To the point of saying that towards the end it is a totally different novel with different genres.