Description
The Red Person began as a victim brutally murdered by a family friend. This death directly fuels the supernatural events at the high school.

She serves as the primary antagonist within the "body search" game, relentlessly hunting students isolated on school grounds. She manifests repeatedly to target individuals until they leave the school property. After killing a victim, she scatters their body into eight pieces and forces another student to recruit six participants, restarting the game cycle to search for the remains.

The game operates under specific rules enforced by the Red Person and her twin sister, who orchestrates events. Both perceive their actions as playful activities rather than malicious acts, reflecting their distorted perspectives as vengeful spirits. The game traps participants in a time loop, forcing them to relive November 9th until they locate all eight body parts of the designated victim. During each nightly cycle, the Red Person pursues and kills the searchers. Death within the game resets the loop without permanent consequences, but survivors awaken the next morning with memories intact.

Resolving the game requires retrieving all body parts and placing them in a coffin. One participant must then enter the coffin to break the cycle. This erases the memories of deceased participants regarding both the game and the person who entered the coffin. Survivors retain their memories but often face social alienation due to the memory alteration affecting others.

The Red Person's connection extends beyond the game mechanics. Kenshi Sugimoto, a recurring participant, becomes possessed by his grandfather—the brother of the Red Person's murderer. Wrongfully blamed for the crime and driven to suicide, the grandfather uses Kenshi to protect the Red Person during game cycles, causing Kenshi to violently attack other players against his will.

Her physical depiction consistently emphasizes a blood-drenched appearance, justifying the name "Red Person." This visual signature reinforces her association with violence and death.