Character Relationship Map: Mourning Grave

Characters

• In-su (played by Kang Ha-neul) — protagonist

  In-su is a high school student with the unusual ability to see ghosts. After transferring to a rural school outside Seoul, he faces harassment from classmates and returns to his hometown to live with...

• Ghost Girl (played by Kim So-eun) — supporting

  Ghost Girl is the pretty ghost In-su encounters soon after arriving in his hometown. Her presence affects his life and draws him deeper into the supernatural events surrounding the school bullies, who...

• Ki-tae (played by Kwak Jung-wook) — supporting

  Ki-tae is a student involved in the tensions among In-su and the other students. In-su confronts him and accuses him, along with Sung-hee and others, of driving Sae-hee to her death. Although the stud...

• Hyun-ji (played by Han Hye-rin) — supporting

  Hyun-ji is a blind student at In-su’s school who can communicate with him. Their connection brings her into contact with In-su’s unusual ability to see ghosts, as he becomes caught between the living...

• Sung-hee (played by Joo Ah-reum) — supporting

  Sung-hee is one of the students In-su confronts over Sae-hee’s suffering. He accuses Sung-hee, Ki-tae, and the others of bullying Sae-hee and driving her to her death, and demands that they confess an...

• Student (played by Park Geun-cheol) — supporting
• Teacher (played by Lee Jung-chul) — minor

  The teacher is connected to the students’ gathering in the library: they receive a message from their teacher and assemble there. The synopsis does not identify the teacher further or describe direct...

Canonical Relationships

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

• In-su → Teacher (Professional Student And Teacher) — The teacher's message brings the students together at the library before the masked spirit confronts them.

  The students receive a message from their teacher and gather in the library.

Story Dynamics

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

• In-su → Student (Schoolmates In Shared Conflict) — The plot places In-su in conflict with the students implicated in the bullying, though it does not specify this student's individual actions.

  In-su becomes involved in tensions among Ki-tae and the other students, and confronts the students over the masked ghost's suffering.

• Ki-tae → Sung-hee (Social Schoolmates In Shared Conflict) — They are both part of the group whose conduct and knowledge of the bullied student's suffering are challenged.

  The plot describes tensions among Ki-tae and the other students, and later names Ki-tae and Sung-hee among the students confronted by In-su.

• In-su → Sung-hee (Conflict Accuser And Accused) — In-su presses Sung-hee and the other students to acknowledge their responsibility, but they initially deny it.

  In-su confronts Ki-tae, Sung-hee, and the other students, accusing them of driving the masked ghost to her death and demanding a confession and apolog...

• In-su → Ki-tae (Conflict Accuser And Accused) — In-su challenges Ki-tae over the students' treatment of the bullied girl, while Ki-tae and the others deny responsibility.

  In-su confronts Ki-tae and other students, accusing them of driving the masked ghost to her death and demanding that they confess and apologize.

• In-su → Hyun-ji (Social Communicating Acquaintances) — Hyun-ji is one of the students In-su connects with at his new school.

  At school, In-su meets Hyun-ji, a blind student who can communicate with him.

• In-su → Ghost Girl (Alliance Spirit And Helper) — Their encounter brings In-su face to face with guilt over his earlier lie about knowing who killed her, and helping her brings him some relief.

  In-su encounters the spirit of a girl from his elementary-school class, who says she was murdered. He helps her find peace.

Story Analysis

A ghost-seeing student confronts old guilt and school cruelty as a vengeful masked spirit turns the students' past actions into a supernatural reckoning.

Plot Progression

1. A Transfer Shadowed by Spirits — In-su reassures his mother while adjusting to a new school where classmates know about his ability to see ghosts. He asks to live with his uncle, who warns him not to help spirits, but In-su is soon c...
2. Guilt Returns to Town — In-su meets Hyun-ji and becomes entangled in student tensions. A ghost from his elementary-school past says she was murdered, prompting In-su to admit his earlier lie and confront the guilt he tried t...
3. The Masked Haunting — A masked ghost haunts the school as In-su confronts students including Ki-tae and Sung-hee over their treatment of the bullied girl. Their denials give way to unease, while memories expose the cruelty...
4. Locked in the Library — A teacher's message brings the students to the library, where they find the door locked and smell gasoline. The masked spirit confronts them, rejects their pleas for forgiveness, and continues to rage...