*This content was translated by AI.

'Kkoko-Mu' features a serial killer who served as the inspiration for the film 'A Hard Day.'
The episode of SBS's 'Stories That Follow Each Other' (directed by Ahn Yoo-tae, Lee Keun-byung, and Moon Chi-young, hereafter referred to as 'Kkoko-Mu'), airing on the 13th, is titled 'A Hard Day - Hunters of Death.' Singer and actor Kim Dong-jun, actress Yoon Bo-mi, and actress Bae Hae-seon appear as listeners, discussing the indiscriminate serial killings carried out by a four-member criminal group composed of brothers and friends.
Notably, this 'Kkoko-Mu' episode has drawn significant attention because it is based on the real-life case that inspired 'A Hard Day.' The perpetrators deliberately caused collisions with foreign luxury cars, then brutally murdered the drivers who stepped out of their vehicles. However, one of the targeted drivers happened to be a local gangster, which allowed him to survive and ultimately help capture the serial killers.
Another shocking aspect was the behavior of the four-member serial killer group. While it initially appeared that their goal was kidnapping followed by ransom demands, they were actually committing indiscriminate serial murders.

Even after being arrested, the suspects confessed to additional unsolved murders driven by revenge against a fellow criminal who had betrayed them. It was revealed that they committed 18 crimes over 11 months across the country, including nine murders. In some cases, they killed twice in a single month. Despite the high number of killings, the total amount of money they stole was only 15 million won.
Notably, one of the perpetrators told the detective who arrested him, "I have never felt sorry for my victims, nor do I intend to," and added, "Look forward to Part 3 of my story." This statement suggests that the number of victims may exceed nine.
Reacting to their story, listener Kim Dong-jun said, "Demons do exist," struggling to contain his anger. Yoon Bo-mi expressed shock, stating, "This is already horrific; there are even more terrifying crimes hidden away," and labeled them "the second Yoo Young-chul." Bae Hae-seon remarked, "They seem to have given up on being human," expressing disbelief at the unimaginable nature of their crimes. The episode will air on the 13th at 10:20 p.m.

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*This content was translated by AI.
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