Character Relationship Map: Devils

Characters

• Jin-hyuk (played by Jang Dong-yoon) — protagonist

  Jin-hyuk is found with Jae-hwan after the cliff fall and is later revealed to have manipulated Jae-hwan’s sense of self through body exchange and implanted memories.

• Jae-hwan (played by Oh Dae-hwan) — supporting

  Jae-hwan is the central investigator, devastated by a colleague’s death and determined to capture the murderer. After losing a month of memory and suffering aphasia, he believes he has awakened in a m...

• Min-sung (played by Jang Jae-ho) — supporting

  Min-sung is the person Jae-hwan specifically asks to speak with, claiming that Min-sung alone can explain what happened after the cliff fall.

• Old man (played by Son Jong-hak) — supporting

  The Old man is connected to the violent network involved in the torture and murder videos.

• Team leader (played by Choi Gwi-hwa) — supporting

  The Team leader accepts the dangerous identity confusion as a weapon, releases Jae-hwan under Police supervision, and orders him to continue hunting the remaining killers.

• Yohan (played by Yoon Byung-hee) — supporting

  Yohan is connected to the violent network involved in the torture and murder videos.

• Police (played by Choi Don-hak) — supporting

  The Police are contacted by Jae-hwan after his escape from medical custody and become involved in supervising him during the continued investigation.

Canonical Relationships

Family, romantic, and professional connections based on plot evidence.

• Jae-hwan → Police (Professional Cooperation Under Pressure) — Jae-hwan communicates and cooperates with the Police while pursuing the killers.

  After escaping medical custody, Jae-hwan contacts the Police and is later released under Police supervision.

• Jae-hwan → Team leader (Professional Subordinate And Commander) — The Team leader directs Jae-hwan's continued role in the investigation.

  The Team leader accepts the identity confusion as a weapon, releases Jae-hwan under Police supervision, and orders him to hunt the remaining killers.

Story Dynamics

Alliances, conflicts, and narrative interactions that evolve throughout the story.

• Jin-hyuk → Min-sung (Unknown Unspecified Connection) — The plot links Min-sung to explaining events involving Jae-hwan and Jin-hyuk, but does not specify their relationship.

  Jae-hwan asks to speak with Min-sung and says Min-sung alone can explain what happened after the fall with Jin-hyuk.

• Yohan → Old man (Alliance Criminal Network Connection) — They are presented as connected figures within the criminal network.

  The plot describes a violent network involving both Yohan and the Old man, with both connected to the torture and murder videos.

• Jae-hwan → Old man (Conflict Adversary) — The Old man is connected to the crimes at the center of Jae-hwan's investigation.

  The trail leads to a violent network involving the Old man, connected to torture and murder videos; Jae-hwan later confronts surviving criminals.

• Jae-hwan → Yohan (Conflict Adversary) — Yohan is linked to the criminal network Jae-hwan pursues.

  The trail leads to a violent network involving Yohan, and Jae-hwan later confronts the surviving criminals.

• Jae-hwan → Min-sung (Social Sought Explanation) — Jae-hwan turns to Min-sung as the person he believes can clarify the missing month.

  After being found, Jae-hwan specifically asks to speak with Min-sung, claiming that Min-sung alone can explain what happened.

• Jae-hwan → Jin-hyuk (Conflicted Identity) — Their connection is shaped by the apparent body exchange, manipulation, and uncertainty over whose identity is in control.

  Jae-hwan is found after falling from a cliff with Jin-hyuk, later believes he has awakened in a murderer's body, and the story reveals that Jin-hyuk m...

Story Analysis

Jae-hwan's pursuit of violent killers becomes entangled with a missing month, manipulated identity, and uncertainty over who controls his body and memories.

Plot Progression

1. The Ambush and the Unsolved Crimes — Jae-hwan joins an operation against brutal killers, but an ambush leaves a close colleague mortally wounded. Online victim footage increases the urgency, while the Police remain short of knowledge abo...
2. A Return Without a Past — A month after the fall, Jae-hwan is found alive with Jin-hyuk but cannot remember the missing month. Temporary aphasia and his belief that he is in a murderer's body make his account difficult to reso...
3. A Coerced Hunt — After escaping medical custody, Jae-hwan contacts the Police and faces a demand to bring three traitors alive. A lead at Yongsan station forces him to cooperate while concealing the truth from his uni...
4. The Criminal Network Exposed — The investigation reaches a violent network involving Yohan and the Old man. Jae-hwan confronts surviving criminals, while the revelations about implanted memories and manipulated identity unsettle th...
5. An Unfinished Hunt — The Team leader accepts the identity confusion as a dangerous tool rather than a reason to stop the investigation. Jae-hwan is released under Police supervision and ordered to pursue the remaining kil...