Character Relationship Map: Twenty

Characters

• Chi-ho (played by Kim Woo-bin) — protagonist

  Recent high school graduate and best friend who is an unemployed womanizer prioritizing dating and living in the moment.

• Dong-woo (played by Lee Jun-ho) — supporting
• Kyung-jae (played by Kang Ha-neul) — supporting

  Recent graduate and best friend who is a shy university student aiming for a corporate job, known for his drastic personality transformation when drunk.

• Chi-ho's Mother (played by Park Myung-shin) — supporting
• Bum-soo (played by Heo Joon-seok) — supporting
• Dong-woo's Mother (played by Oh Hyun-kyung) — supporting
• Bum-soo's Wife (played by Jeon Yeo-jin) — supporting
• Chi-ho's Father (played by Kim Eui-sung) — minor

Canonical Relationships

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

• Dong-woo's Mother → Dong-woo (mother)
• Bum-soo's Wife → Bum-soo (wife)
• Chi-ho's Father → Chi-ho (father)
• Chi-ho's Mother → Chi-ho (mother)

Story Dynamics

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

• Kyung-jae → Dong-woo (Social Best Friend) — They share the central friendship while facing different pressures after graduation.

  The plot explicitly identifies Kyung-jae and Dong-woo as best friends within the same trio.

• Chi-ho → Dong-woo (Social Best Friend) — Their friendship connects Chi-ho's carefree lifestyle with Dong-woo's changing responsibilities.

  The plot explicitly states that Chi-ho and Dong-woo are best friends who have recently graduated from high school and turned 20.

• Chi-ho → Kyung-jae (Social Best Friend) — They are members of the central three-person friendship.

  The plot explicitly states that Chi-ho and Kyung-jae are best friends who have recently graduated from high school and turned 20.

Story Analysis

Three friends navigate the transition from school into adulthood as friendship, work, family obligations, romance, and uncertain ambitions reshape their paths.

Plot Progression

1. A Friendship Begins — A schoolyard fight over So-min leads the three friends to settle the matter with rock-paper-scissors. Their friendship continues through school, exams, family difficulties, and teasing.
2. Dreams After School — As graduation nears, the friends face the gap between their dreams and practical realities. Their futures begin to diverge as adulthood approaches.
3. A Job on the Film Set — One friend seeks a place in entertainment and accepts temporary work as an actress's pretend manager. He sees her professional frustrations, and their arrangement becomes more personal.
4. The Factory Choice — Another friend weighs his hopes of becoming an artist against family financial trouble and an uncle's factory offer. He asks for time as family responsibility and love influence his decision.
5. Romance Tests the Bond — A friend's dating news provokes anger and hurt before the news is eventually met with a blessing. The group gives him room to accept the change.
6. A Choice Shared at Home — A young man returns to his mother and decides to take the factory job, acknowledging that love is part of his reason. He closes the conversation with a joke about the beautiful woman important to him.