Character Relationship Map: Diva

Characters

• Yi-young (played by Shin Min-a) — protagonist

  Yi-young is an elite platform diver and the story’s central figure, preparing for national team selection while facing possible retirement after a poor result. She is Soo-jin’s longtime friend and syn...

• Soo-jin (played by Lee You-young) — supporting

  Soo-jin is Yi-young’s longtime friend and synchronized-diving partner, whose years without a medal put her place on the team at risk. Yi-young tries to protect their partnership by proposing a team sw...

• Detective Oh (played by Park Seong-yeon) — supporting

  Detective Oh is an investigator examining the serious vehicle accident involving Yi-young and Soo-jin. Together with Detective Kang, Detective Oh questions Yi-young about the vehicle, Soo-jin’s drinki...

• Aquarium manager (played by Heo Dong-won) — supporting

  The Aquarium manager offers Yi-young an unsettling interpretation of her relationship with Soo-jin, comparing the two divers to different kinds of jellyfish. The manager warns that one may weaken and...

• Detective Kang (played by Heo Hyung-kyu) — supporting

  Detective Kang is an investigator involved in the inquiry into the crash that leaves Yi-young hospitalized and Soo-jin missing. Kang questions Yi-young alongside Detective Oh about the vehicle, drinki...

Canonical Relationships

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

• Detective Kang → Soo-jin (Professional Search Subject) — Soo-jin's disappearance remains part of Detective Kang's case.

  Detective Kang participates in the inquiry into the accident and the unresolved search for the missing Soo-jin.

• Detective Oh → Soo-jin (Professional Search Subject) — Detective Oh's investigative work is tied to locating Soo-jin.

  The police investigate Soo-jin's disappearance and later halt the search while stating that they will continue looking.

• Yi-young → Detective Kang (Professional Investigative Subject) — Detective Kang is part of the police inquiry surrounding Yi-young.

  Detective Kang participates in questioning Yi-young about the vehicle, Soo-jin's drinking, and the accident report.

• Yi-young → Detective Oh (Professional Investigative Subject) — Detective Oh investigates Yi-young's role in the unexplained crash.

  Detective Oh questions Yi-young about the vehicle, Soo-jin's drinking habits, and inconsistencies in the accident report.

Story Dynamics

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

• Aquarium manager → Soo-jin (Unknown Warning Subject) — Soo-jin is part of the manager's warning about mutual weakening.

  The Aquarium manager's jellyfish comparison explicitly concerns the destructive effects that one diver may have on the other.

• Aquarium manager → Yi-young (Social Warning Speaker) — The manager gives Yi-young a disturbing metaphor for her relationship with Soo-jin.

  The Aquarium manager compares the two divers to different kinds of jellyfish and warns that one can weaken and ultimately kill the other.

• Detective Oh → Detective Kang (Alliance Investigation Partners) — They work together on the investigation into the crash and Soo-jin's disappearance.

  Detective Oh and Detective Kang jointly question Yi-young and examine inconsistencies in the accident report.

• Yi-young → Soo-jin (Social Longtime Friend) — Their long friendship forms the emotional center of the story.

  The plot identifies Soo-jin as Yi-young's longtime friend and synchronized-diving partner.

Story Analysis

A champion diver confronts friendship, rivalry, trauma, and unresolved guilt after her partner disappears following a crash.

Plot Progression

1. Partners Under Pressure — Yi-young wins first place while Soo-jin risks being pushed aside. Yi-young tries to preserve their synchronized partnership despite the widening performance gap.
2. The Crash and Disappearance — Selection pressure leads into an intoxicated drive and a serious accident. Yi-young survives in hospital, but Soo-jin disappears and Yi-young remembers nothing.
3. Evidence Without Answers — Detective Oh and Detective Kang question Yi-young and identify inconsistencies in the accident report. Hidden drinking and possible jealousy make the missing truth more disturbing.
4. Trauma Beneath Recovery — Yi-young is warned about post-traumatic stress and struggles to dive normally. The Aquarium manager's jellyfish metaphor reinforces her fear that the partnership was destructive.
5. The Cliff of Guilt — Yi-young publicly presents herself as recovered, but her unstable selection dives expose the trauma beneath that claim. At the cliff, the unresolved accident forces her to confront guilt and fear.