On April 13, 2022, a knife rampage occurred at around 0:13 a.m. in Seonghwan-eup, Cheonan-si, Chungcheongnam-do. According to the police, Kim (54 years old at the time) allegedly killed two women in her 30s by wielding a weapon against two couples who had a quarrel on the sidewalk in front of a karaoke room in Seonghwan-eup, Seobuk-gu, Cheonan. The husbands of the victim couple were reportedly devastated while waiting for a chauffeur to return home after the dinner gathering. Two women in their 30s were taken to a hospital with cardiac arrest, but died, and two men were seriously injured and are being treated. Kim, a criminal with eight previous convictions, was arrested after being reported to the police while fleeing after the crime. Experts claimed that the perpetrator targeted the victims' neck, heart, and sides in the process of wielding a weapon, and that the depth of the wound suggests that it was a planned murder, not an accident. There was also testimony that the perpetra

 On April 22, 2021, an incident in Sinpo-dong, Jung-gu, Incheon, occurred when a karaoke owner named Heo Min-woo, a local gangster, killed the victim, Kim. Heo Min-woo got angry and beat Kim to death with his fist and foot while arguing with Kim in the process of asking for money for the drink. According to a police investigation, Heo Min-woo asked Kim to pay 100,000 won in cash, but Kim paid only 20,000 won to state that the fight broke out. In the end, Heo Min-woo tried to get an additional 80,000 won, but a murder occurred. Kim visited the karaoke room with one of his local juniors at 7:30 p.m. on April 21, the previous day, and paid 300,000 won in advance to Heo Min-woo to play at the karaoke room. The junior left the karaoke room at 10:30 p.m., and Kim was in a situation where he had to pay an additional 100,000 won for drinking after playing alone more. Kim, who was short of cash, called 112 during a fight with Heo Min-woo and talked to the owner for a while after saying, "I