Character Relationship Map: Ditto

Characters

• Yong (played by Yeo Jin-goo) — protagonist
• Mu-nee (played by Cho Yi-hyun) — supporting
• Han-sol (played by Kim Hye-yoon) — supporting
• Student (played by Song Woo-rim) — minor

Canonical Relationships

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

• Yong → Mu-nee (Temporal Cross-Time Confidants) — Their unusual radio conversations become a source of mutual perspective and encouragement as each considers love, dreams, and career choices.

  A ham radio connects Yong with Mu-nee, who speaks as though they live in different times. They discuss love, university life, and uncertainty about th...

• Yong → Han-sol (Growing Romantic Interest) — Their connection develops from Yong's effort to welcome Han-sol into university life into growing closeness, while his friends caution him not to rush her.

  Yong tries to reach Han-sol and bring her to a department gathering. As they share outings, he realizes he wants to become someone worthy of her.

Story Dynamics

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

• Yong → Student (Unknown Injury And Team Replacement) — Yong's injury to the student leads to him being pushed into the student's place on the basketball team.

  After Yong injures a fellow student, he is pushed into taking that student's place on the basketball team.

Story Analysis

A university student's emerging feelings and uncertain ambitions unfold alongside a mysterious radio connection that links him with someone from another time.

Plot Progression

1. University Expectations and New Encounters — Yong enters university uncertain about his future and is pushed onto the basketball team after injuring a fellow student. He also helps welcome Han-sol, who missed orientation.
2. The Voice Across Time — A ham radio connects Yong with Mu-nee, who seems to belong to another time. Their conversations open a space to discuss love, university life, and difficult choices.
3. Dreams and Growing Closeness — Yong tells Mu-nee that he may want to write, while Mu-nee shares her interest in engineering that could help small factories. Meanwhile, Yong and Han-sol share outings and become closer.
4. A Promise and an Uncertain Past — Yong's friends urge him to face his feelings, and Yong and Han-sol make a promise connected to the radio. The stories across time converge around a disappeared man described as Mu-nee's mother's first...