The smell of bad intent
Bullet TrainThe smell of bad intent is a metaphorical expression for recognizing cruelty, humiliation, and self-serving ambition as a kind of presence that can be detected before it is fully explained. Shigeru Kimura describes it as something he once sensed everywhere in his former line of work, and later identifies it in a boy whose mild manner conceals a dangerous capacity to manipulate. The phrase also resonates in the judgment of his son, Yuichi Kimura, who recognizes the same quality in Prince. Across these scenes, the metaphor makes moral suspicion concrete, but it does not make suspicion itself a solution: seeing harm clearly is only the beginning of confronting it.
A metaphor made into a habit of perception
For Shigeru, bad intent is not merely a label for a particular offense. He speaks of it as a smell that can disclose what a person values: hurting or humiliating others, and advancing their own position above all else. The metaphor turns an ethical judgment into an imagined physical sense. It suggests that such motives announce themselves even when their owner has not openly stated them, and that attention to character may reveal what polite appearances conceal.
The expression is also habitual. Akiko Kimura remembers Shigeru using it repeatedly in the past, to the point that she playfully describes him as though he were haunted by the spirit of bad intent. Her recollection gives the phrase a history within their marriage: it is not a sudden impression invented for the encounter with Prince, but an old idiom of Shigeru’s, familiar enough to prompt affectionate teasing. His grave insistence and Akiko’s bemused response hold the metaphor between conviction and private joke without dismissing what it means to him.
Shigeru’s break with his former work
Shigeru explains that the birth of Yuichi was not his only reason for leaving his former line of work. About thirty years earlier, he had grown disgusted with the people around him because, as he saw it, they reeked of the desire to hurt, humiliate, and improve their own standing. The account makes his change of career a moral departure as well as a family decision. He and Akiko both welcomed the move, but Shigeru’s recollection centers on exhaustion with an environment in which exploitation had become ordinary.
The contrast he draws with his later work is specific. Running the supermarket has been hard, but he says he has never once encountered that same quality there. The change is not presented as a claim that his new life is effortless; rather, difficulty and moral disgust are set apart. Work can be demanding without being shaped by the intent to degrade or dominate other people. That distinction gives the supermarket’s ordinary labor a quiet significance in his account of why he left.
Shigeru nevertheless recognizes an uncomfortable resemblance between his old life and Yuichi’s work. When he heard that his son had begun helping with rough jobs, he worried enough to consider following him to keep watch. The echo complicates any simple story of escape: Shigeru has rejected the world he left, yet his son has entered work of a similar kind. The evidence does not say that Yuichi inherited the phrase or shares every part of his father’s outlook, but their linked judgments make the language of bad intent a striking point of recognition across generations.
From suspicion to concern for Wataru
The metaphor becomes consequential when Shigeru and Akiko consider whether Wataru might be in danger at the hospital. Akiko raises the possibility that someone from their past could hold a grudge and target him. Shigeru’s immediate stillness marks the thought as new to him; he had not considered that the old history could reach their grandson. Akiko’s reasoning is rooted in the thirty years that have passed: people once afraid of them might now believe the balance has changed.
This exchange shows the limits of Shigeru’s confidence in his ability to sense bad intent. A moral instinct may help identify a person’s character, but it cannot by itself disclose every threat or anticipate how the past might return. Akiko supplies a possibility he has missed, and the danger is framed not as a vague atmosphere but as a possible consequence of an old relationship. The phrase’s reach therefore includes both discernment and uncertainty: sensing hostility is not the same as knowing where it will lead.
Recognition and confrontation aboard the train
When Shigeru meets Prince in person, he identifies him as the boy who spoke with him on the phone and explains that the call worried him enough for Shigeru and Akiko to hurry to catch the train at Mizusawa-Esashi. He describes the boy as careful with his words and says that he stinks. Prince answers with a sulky, apparently offended response, treating the judgment as an impolite remark between people meeting for the first time. Shigeru rejects that framing: the call has already given him grounds for concern, even before the face-to-face encounter.
Yuichi’s confrontation develops the same vocabulary into a more direct accusation. He tells Prince that he is not fooled by a performance of remorse and that, among everyone he has encountered, Prince stinks the worst. He associates that impression with the belief that Prince has done terrible things, while making clear that the offer of a chance to reflect does not amount to forgiveness or release from consequences. The scene makes the metaphor part of a moral challenge: Prince’s careful words and apparent regret do not, in Yuichi’s judgment, erase the pattern he perceives behind them.
The phrase beside learned helplessness
Elsewhere, Yuichi’s response to Prince’s control of schoolchildren offers a useful contrast to the act of naming bad intent. Recalling an earlier job guarding a kidnapped man, Yuichi remembers learning about learned helplessness: after repeated unavoidable shocks, a dog stopped trying to escape even when escape became possible. He applies the idea to the schoolchildren, who have seen suffering inflicted on classmates and adults and have come to believe they cannot defeat Prince. He also sees the electric shocks as part of the means by which that powerlessness has taken root.
At the school, the coercion is visible in the students’ treatment of Tomoyasu and his dog, Takeshi. The students prepare a defibrillator experiment, while one threatens another with reporting him to Prince after hearing him express reluctance. Yuichi understands that fear has damaged trust among them: students who might be allies monitor and accuse one another to protect themselves from punishment. This account does not identify the children themselves as the source of bad intent; it shows them acting under a system of fear. Read alongside Shigeru’s phrase and Yuichi’s judgment of Prince, it distinguishes the person who exploits others from those whose choices have been narrowed by intimidation. The metaphor names a perceived moral character; the analysis of learned helplessness explains how domination can make resistance feel impossible.

