The film lacks explicit LGBTQ+ characters or themes. The narrative focuses on the protagonist's internal psyche and a transactional relationship with a medical student.

A female medical student holds professional authority over the male protagonist. This dynamic subverts traditional hierarchies by making her the driver of the plot.

As a Japanese production, the cast appears largely homogeneous. The film focuses on a localized social reality rather than multi-ethnic or intersectional casting.

The story explores psychological relativism and the instability of truth. It uses a marginalized homeless man to critique social stability and perceived normality.

The film examines altered states of consciousness through the lens of trepanation. It treats the protagonist's condition as a harrowing way of interacting with the world.