*Double Mints* is a dark,
psychological thriller that explores a toxic, codependent relationship between two estranged men who share the same unusual name, Mitsuo Ichikawa. The narrative begins when the protagonist, a quiet and seemingly ordinary office worker named Mitsuo Ichikawa (often called "the tall one"), is confronted out of nowhere by an impulsive, dangerous former high school classmate, also named Mitsuo Ichikawa ("the short one").The short Ichikawa bursts back into the protagonist’s life with a shocking confession: he has just brutally murdered an older woman during a robbery gone wrong. Instead of turning him in or fleeing in terror, the tall Ichikawa finds himself inexplicably paralyzed, unable to push the intruder away. Driven by a complex mix of repressed guilt,
childhood trauma, and a strange, latent homosexual attraction, the tall Ichikawa allows the murderer to take over his apartment and dictate the terms of his existence.As they live in cramped quarters, their dynamic shifts into a labyrinth of sadomasochism, psychological dominance, and erotic submission. The short Ichikawa treats his namesake both as a lover and an abused servant, forcing him to witness and participate in increasingly depraved and violent acts. Through fragmented flashbacks, the film reveals the root of their twisted bond: a shared, traumatic history from their school days where power imbalances and suppressed desires first took root. The tall Ichikawa had long harbored an obsessive, submissive fixation on the chaotic rebel, viewing him as the only person who truly made him feel alive, even if that feeling was born of terror.As the police close in and their reality begins to fracture under the weight of paranoia, murder, and intense physical intimacy, the two men embark on a surreal road trip. This journey serves as a psychological descent into the abyss, forcing them to strip away societal norms entirely. In the climax, the boundaries between identity, selfhood, and otherness completely dissolve. They are no longer two separate individuals, but two halves of a single, mutilated psyche bound by blood, sex, and shared criminality. The film concludes on an ambiguous, haunting note, suggesting that true freedom for them can only be found in absolute, self-destructive surrender to one another.