Character Relationship Map: Oldboy

Characters

• Oh Dae-Su (played by Choi Min-sik) — protagonist

  Ordinary man imprisoned for 15 years, seeking vengeance upon release.

• Lee Woo-jin (played by Yoo Ji-tae) — protagonist

  Wealthy, manipulative mastermind who orchestrates Dae-su's imprisonment.

• Mi-do (played by Kang Hye-jung) — supporting

  Young sushi chef who falls in love with Dae-su and aids his investigation.

• Hypnotist (played by Lee Seung-shin) — supporting

  Professional hired to manipulate memories.

• Lee Soo-ah (played by Yoon Jin-seo) — supporting

  Woo-jin's sister, central to his motive.

Key Relationships

• Lee Woo-jin → Mi-do (Narrative Puppeteer & Puppet)
• Oh Dae-Su → Hypnotist (Professional Client & Specialist)
• Oh Dae-Su → Lee Soo-ah (Social High School Peer)
• Oh Dae-Su → Mi-do (Romantic Lovers)
• Oh Dae-Su → Lee Woo-jin (Conflict Arch Enemy)

Story Analysis

A man imprisoned for 15 years seeks vengeance, only to discover his tormentor orchestrated a tragic incestuous revenge plot.

Plot Progression

1. The Fifteen Year Cage
2. Shadows of the Past
3. The Incestuous Trap
4. Penance and Erasure