Character Relationship Map: Black Rat

Characters

• Misato (played by Misaki Yonemura) — protagonist

  A classmate and friend of Asuka, Misato supports Asuka's proposal for a rat-themed dance at the school festival. Years later, she faces the masked attacker at school and survives the encounter. She la...

• Takashi (played by Makoto Sakamoto) — supporting

  Takashi is one of Asuka's classmates and receives the message summoning the group to classroom 3B. After the masked figure arrives and threatens the students, Takashi is dragged outside and killed wit...

• Asuka (played by Rina Saito) — supporting

  Asuka is a high school student whose suicide by jumping from the school rooftop, while wearing a rat mask, sets the story's events in motion. Before her death, she proposes a rat-themed dance for the...

Story Dynamics

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

• Takashi → Asuka (Social Classmate) — Their relationship is established as a shared school and class connection.

  Takashi is identified as one of Asuka's six classmates who receives the message inviting him to classroom 3B.

• Misato → Asuka (Social Supportive Friend) — Misato is the only classmate explicitly shown supporting Asuka's performance idea.

  Before Asuka's death, Misato supports Asuka's proposal to perform a rat-themed dance at the cultural festival.

• Misato → Takashi (Social Classmate) — They are members of the same student circle drawn into the revenge scenario.

  Misato and Takashi are both identified among Asuka's classmates connected to the midnight meeting in classroom 3B.

Story Analysis

A school tragedy transforms humiliation, guilt, and unresolved resentment into a masked cycle of revenge.

Plot Progression

1. The Smile Behind The Mask — Asuka proposes a rat-themed cultural festival dance, but most classmates reject the mask and skip practice. Their mockery exposes the social cruelty surrounding her before her death.
2. Forty-Nine Days Of Silence — Asuka dies by suicide on the school rooftop. Forty-nine days later, her classmates receive invitations to a midnight meeting signed with her name.
3. Vengeance In Classroom 3B — A rat-masked figure gathers the students, writes their names on the chalkboard, and announces a revenge killing. The threat quickly becomes physical and lethal.
4. The Karaoke Judgment — A captive student is restrained and forced to reach a perfect karaoke score. The challenge recalls the classmates' abandonment and mockery of Asuka before ending in electrocution.
5. Masks Fall At The End — Misato confronts the masked attacker on the rooftop and survives the struggle. She later wears Asuka's mask, kills another classmate, and remains at the school as emergency vehicles arrive.