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

 On March 2, 2021, a father (27) and stepmother (28) murdered their 8-year-old daughter, Jeong Byeol-yang, in Unnam-dong, Jung-gu, Incheon, South Korea. The stepmother had two children with her ex-husband and then cohabited with the father without being formally married. After separating from her ex-husband, she met the father through social media and they married in July 2017.  In January 2018, they moved to Incheon with their children, and in July 2019, they moved to Jung-gu, Incheon. From January 2018 to March 2, 2021, the couple repeatedly abused their daughter, including withholding food from her for one hour, force-feeding her feces and urine, beating her, and making her wear feces-stained underwear. They also made her eat pig's feet in secret and sleep on bones under a blanket. From August 2020, they fed her only once a day, and from December 2020 until her death, they fed her one meal a day or starved her. The victim and her sister attended an elementary school in Incheon