Character Relationship Map: Midnight Sun

Characters

• Lee Mi-sol (played by Jung Zi-so) — protagonist

  Lee Mi-sol is a songwriter who initially hides her music and struggles with a serious, untreatable illness. As her relationship with Kim Min-jun grows, she shares her original songs and works toward r...

• Kim Min-jun (played by Cha Hak-yeon) — supporting

  Kim Min-jun is a songwriter and musician who shares Mi-sol's love of music. He encourages her to sing her original songs, stays close as her illness worsens, and helps her pursue performing by gatheri...

• Lee Gwang-gil (played by Jung Woong-in) — supporting

  Lee Gwang-gil is Mi-sol's father and helps care for her as her illness progresses. He worries that she may make a mistake during her recording session, while Kim Min-jun reassures him that singing mak...

Canonical Relationships

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

• Lee Gwang-gil → Lee Mi-sol (Family Father) — Their father-daughter bond combines mutual care and anxiety.

  Mi-sol helps care for her father, Lee Gwang-gil, and he worries about her performance before the recording session.

• Lee Mi-sol → Kim Min-jun (Romantic Partner) — Their romance grows through musical intimacy and emotional support.

  Their awkward attempts at flirting develop into friendship and then romance after they discover their shared love of music.

Story Dynamics

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

• Kim Min-jun → Lee Gwang-gil (Social Reassuring Ally) — Min-jun calms Mi-sol's father and affirms her artistic identity.

  When Gwang-gil worries about Mi-sol's performance, Min-jun reassures him that she is completely committed and happiest when singing.

Story Analysis

A young songwriter moves from hiding her music to sharing it while facing a progressive illness and the support of those closest to her.

Plot Progression

1. A Song Begins Between Them — Mi-sol secretly watches a fruit-truck vendor and struggles to approach him. After meeting Min-jun, their shared love of music creates a sincere connection.
2. Love Finds Its Voice — Min-jun encourages Mi-sol to sing her original work. Sharing music transforms their friendship into romance while Mi-sol explains her hopes for college, saving money, and auditioning.
3. Illness Changes the Future — Mi-sol's serious illness becomes the central threat as her condition progresses and may cause paralysis. She tries to resist being defined by the diagnosis, but fear strains her relationship with Min-...
4. The Courage to Perform — Mi-sol continues writing music while Min-jun gathers musicians and arranges a recording opportunity. At the session, she chooses concentration and performance while her loved ones wait outside to supp...