The film focuses on a central trio and adheres to traditional character archetypes common to 1990s mystery genres. There is no explicit evidence of non-cisnormative identities or narratives designed to critique heteronormativity.

Miyuki serves as a consistent female lead and companion to the protagonist. However, investigative agency is heavily concentrated in the male characters, Kindaichi and Kenmochi, following standard detective-procedural frameworks.

The cast is presented as a culturally homogeneous group rooted in its Japanese manga origins. The production does not utilize diverse casting or non-human species to challenge historical norms.

The story functions as a genre piece centered on restoring order through logic. While the Phantom archetype allows for exploring misunderstood victims, it lacks explicit anti-Western or secularist ideologies.

Characters may experience physical or psychological trauma related to the Phantom mystery. However, there is no evidence of neurodivergence or disabilities being portrayed with agency rather than as plot devices.