Win Disappearance Involving Jong, Daegu, South Korea
This source-based behavioral analysis does not establish a clinical diagnosis, motive, or legal finding.
The case involves a complex relationship dynamic between a student and her lecturer, marked by unreciprocated romantic interest, harassment, and eventual lethal violence. The suspect exhibited obsessive and manipulative behaviors, with a history of similar conduct, culminating in a fatal incident. The victim was unaware or unafraid of the suspect until the disappearance.
Jong pursued Win despite clear rejection, escalating from academic attention to personal intrusion and threats. Win maintained a committed relationship with a boyfriend in China and rejected Jong's advances firmly. The suspect's denial of rejection and false claims of a secret relationship indicate manipulative and controlling tendencies.
Initial academic interactions evolved into unwanted personal attention, followed by harassment and threats. Prior complaints were ignored by the university, enabling continued behavior. The suspect's obsession led to murder, followed by attempts to conceal the crime and mislead authorities.
Each entry separates the reported behavior or state from the analytical strength of the available narration.
| Behavior / construct | Person / subject | Detailed case context | Evidence |
|---|---|---|---|
| Jealousy Emotional state | Jong SuspectLover of victim |
Jong continued to pursue Win despite clear rejection, claiming a secret relationship and attempting to control the narrative. His jealousy likely contributed to the motive for murder. Context or trigger: Rejection by Win of his romantic advances Reported expression: Persistent pursuit and false claims of relationship |
Narrative-supported psychological state Confidence: High |
| Fear or perceived threat Emotional state | Jong SuspectLover of victim |
Jong stated he feared exposure of the secret relationship would harm his position, leading to a fatal confrontation. Context or trigger: Fear of relationship exposure affecting position Reported expression: Claimed fear motivated murder |
Explicitly reported Confidence: Moderate |
| Victim devaluation Cognitive pattern | Jong SuspectLover of victim |
Public comments blamed Win for visiting her teacher's house, reflecting victim blaming and devaluation. Context or trigger: Blaming victim in public comments Reported expression: Comments questioning victim's decisions |
Narrative-supported psychological state Confidence: Moderate |
| Coercive control Control dynamics | Jong SuspectLover of victim |
Jong threatened students with academic consequences to coerce them into relationships, demonstrating control dynamics. Context or trigger: Threats to delay or prevent graduation Reported expression: Using influence to pressure students |
Explicitly reported Confidence: High |
| Marital dissatisfaction Relationship stressor | Win VictimLover of offender |
Win clearly rejected Jong's romantic advances, affirming her relationship with her boyfriend and plans to marry. Context or trigger: Rejection of suspect's advances Reported expression: Firm refusal and commitment to boyfriend |
Explicitly reported Confidence: High |
| Social isolation Relationship stressor | Win VictimLover of offender |
Win's family faced challenges reporting her missing due to language barriers and distance, highlighting social isolation risks. Context or trigger: Being a foreign student in South Korea Reported expression: Language barriers and reliance on others for communication |
Explicitly reported Confidence: Moderate |
Select a stage to expand it; scroll horizontally to follow the full sequence.
Win enrolled in a master's program at Daegu Catholic University in September 2025, studying rehabilitation therapy.
Jong, as a lecturer, gave Win more attention than other students, initiating personal contact beyond academic scope.
Jong confessed romantic feelings to Win, who rejected him clearly, affirming her existing relationship.
After rejection, Jong continued harassment, threatening students with academic consequences to pressure them.
Win disappeared after entering Jong's rented room; Jong murdered her and attempted to conceal the crime.
Police used surveillance and phone data to uncover deception; Jong was arrested and charged.
Prosecution filed formal charges; trial phase began with expected sentencing of 15 to 20 years.
Arrows show the sequence described in the source narrative; they do not prove that one psychological state caused the next event.
Analysis is limited by reliance on suspect's statements for incident details, absence of victim testimony, and incomplete knowledge of full motive and incident circumstances.