★Rights sold: Film, Korean rights
★A groundbreaking masterpiece emerges from PTT, with each serialized chapter receiving explosive recommendations, and PTT members staying up late to follow the story. The novel’s title once strongly occupied the Marvel board’s banner.
★Highly popular series, with the first three volumes having a total view rate of over 240,000!
★Character visualization is decided! Popular illustrator Loiza draws character setting images, and the book comes with a beautiful card as a gift.
★A fastidious young man who specializes in hunting down murderers, the mysterious murder organization Jack, a beautiful and enigmatic psychiatrist, and an intelligence merchant with ulterior motives, the truth is elusive in the complex relationships, whetting the appetite of readers.

★“Killing is exhilarating, but cleaning is a pain... This series of books tightly revolves around such a theme. What we see is a cleaning that is almost obsessive-compulsive. Because of this, when ‘untidy’ scenes appear, the dramatic tension they bring to the readers is greater, and the protagonist’s inner world is more fascinating... Readers can not only see a tightly interwoven, logically rigorous intellectual struggle, but also see the author’s almost sorrowful mockery of society’s pathologies.”
★“The author Kunlun employs a black humor style in his writing... It can be said that he has achieved an excellent balance between ‘horrifying to the point of discomfort’and ‘frivolous to the point of being unacceptable’... Although this work is highly entertaining, the aftertaste left after reading is cleverly tinged with a hint of melancholy. It’s an interesting combination, like an ice cream made from chocolate with a strong bitter taste.”

There are four books in this series:
1.The Home Cleaning Guide for Serial Killers
2.The Bullying Diary That Must Not Be Found by the Teacher
3.The Corpse Record Book Forgotten by the Undertaker
4.The Indulgence Ticket to the Slaughterhouse Amusement Park

Shi Nian (Decade) is a socially awkward murderer for whom clean is not clean enough. At every crime scene, one of his major concerns is not letting blood ruin the furniture. He leaves every crime scene spotless, but inside remains pain and disorder.

When he was eight years old, a girl who was like an older sister to him was killed by a member of a murderous group known as the Jack the Ripper Society. Since that day, Shi Nian has been haunted by bits and pieces of memories of that event. The only thing that he knows for sure is that he must kill all the members of the Jack the Ripper Society in revenge. Once, he was given false information and the case went wrong, which caused him to once again experience great emotional pain. Shouldering the responsibility for seeking revenge for his “sister”, he looks down at the letter J carved on his chest and becomes lost in his memories...

Kunlun,

You will like my novel.

A phenomenon-level author on the PTT Marvel board, with the series being highly recommended and the topic of heated discussions, the novel’s title once strongly occupied the Marvel board’s banner; on the publishing house platform, it holds the throne as the ‘Novel with the highest click rate and the most followers’.