• The film's central murder—depicted in a series of disjointed, almost ritualistic shots—has been interpreted as a metaphor for Japan's post-war trauma, with the killer's amnesia mirroring the nation's collective repression of wartime atrocities. The 'devilish' aspect may symbolize the inescapable nature of historical guilt.
• Some scholars argue that the film's surreal dream sequences, where the protagonist is pursued by faceless figures, prefigure the 'urban legend' horror of later J-horror (e.g., 'Ringu'). The blurred line between reality and nightmare reflects anxieties about modernity and technological alienation.
• The recurring motif of bloodstained hands and the killer's compulsive washing rituals have been linked to Freudian theories of guilt and purification, suggesting the film is a psychological study of obsession rather than a conventional slasher narrative.
• The film's ambiguous ending, where the killer's fate is left unresolved, invites comparisons to European art-horror (e.g., 'Eyes Without a Face'). It may critique the futility of justice in a society where violence is systemic rather than individual.
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