On June 6, 2021, an incident in Ua-dong, Deokjin-gu, Jeonju-si, Jeollabuk-do, occurred when a 38-year-old woman, identified only by her surname Kang, stabbed a 22-year-old man A 34 times with a knife in a studio apartment. The perpetrator and the victim dated for about a month and a half from August to October 2020. The perpetrator was obsessed with the victim and often visited the house if he couldn't reach her. The victim was mentally stressed by the perpetrator's obsession and stalking, and appealed to acquaintances to break up, but the perpetrator continued to cling and stalk for seven months after the breakup. At 11:45 a.m. on June 6, 2021, the perpetrator broke into the studio where the victim lived and stabbed the victim to death 34 times in the chest and neck after drinking when the victim did not answer the phone. The perpetrator rolled the knife with tissue to prevent it from slipping and attacked the drunk victim. The victim was taken to a hospital after the inciden

On March 29, 2017, Kim abducted and murdered A Yang, a second grader at an elementary school in Dongchun-dong, Yeonsu-gu, Incheon. The case is also known as the "Remin Case" after Kim's Twitter handle. Kim and her accomplice, Park Mo, 20, met through a self-portrait community on Twitter two months before the incident. During the police investigation, Kim was found to have searched for the words "murder" and "crazy" on his computer before the crime.  "He was obsessed with murder and crazy things in the media, so it's likely that he committed the crime to fulfill those desires," said Kim Kyung-ho, head of the criminal investigation division at Yeonsu Police Station. "The dramas and novels he watched included scenes of desecrating corpses or cleaning up the scene." According to witnesses, Kim had been regularly watching children at a nearby park prior to the incident. On the afternoon of March 29, 2017, while at the playground, Kim