Asian Giant Hornet

The Asian Giant Hornet enters the train’s story as a possible insect aboard the carriage, but its name also points toward a human killer. Nanao connects the absence of visible wounds on Minegishi’s son to the professional called Hornet; the insect’s venomous threat thus becomes a clue to a concealed method of murder. The distinction between an actual hornet and the assassin is briefly comic, then consequential: a word that sounds like a distraction helps redirect the investigation.

The insect and the misunderstanding

When Nanao brings up a hornet over the phone, Lemon initially takes him literally. He recalls being chased by hornets while collecting beetles as a child and reacts with alarm, shielding his face and looking around. His response briefly turns the conversation away from the criminal investigation and toward a familiar fear of the real insect. Nanao clarifies that he means the professional poisoner, not an ordinary hornet; Tangerine recognizes the reference and names Hornet as the person under discussion.

Later, someone aboard the train raises the possibility of an actual Asian Giant Hornet. The question is put cautiously, in terms of whether a venomous insect might be on the train. The woman addressed appears startled and says that one could have boarded at a station stop; she offers to inform a conductor. Her manner gives no clear indication whether she understands the question’s possible implication or is simply responding to the literal insect. The exchange establishes no confirmed sighting: the hornet remains a possibility, not a discovered animal.

The professional called Hornet

The conversation about the insect gives Nanao a way to explain Minegishi’s son’s death. He suggests that Hornet may have poisoned the young man, accounting for the lack of visible wounds. Tangerine explains the method attributed to the professional in criminal rumor: two needle pricks, with the first said to prime the victim’s immune system and the second to provoke a severe allergic reaction leading to fatal shock. In this account, the name Hornet evokes a venomous sting, but the supposed weapon is a deliberate procedure rather than an insect attack.

The method is presented as rumor, not as confirmed knowledge of exactly what happened. Tangerine does not claim to know precisely how Hornet works, and Nanao frames the poisoning as a possibility that would explain the evidence. Their exchange therefore joins a specific investigative inference to uncertainty: the absence of visible injuries is suggestive, while the proposed two-prick mechanism remains hearsay. The distinction matters because the insect reference is not proof that an insect harmed anyone; it directs attention to a suspected human killer and a concealed means of poisoning.

A clue carried by a name

The Asian Giant Hornet’s narrative importance lies in the moment when ordinary and professional meanings collide. Lemon’s childhood memory makes the literal insect vivid as a source of fear, while his misunderstanding momentarily obscures the serious meaning of Nanao’s warning. Tangerine’s recognition restores the criminal context, and Nanao then connects Hornet to the unexplained death of Minegishi’s son. The sequence moves from misapprehension to a testable suspicion without turning suspicion into certainty.

The later question about an insect aboard the train sustains that ambiguity. The woman’s practical response—that a hornet might have come aboard at a stop and that a conductor should be told—fits the literal reading, but the exchange does not disclose what she knows beyond those words. Across the two conversations, the creature is less a confirmed presence than a double-edged sign: it can mean a dangerous animal, or serve as the name that exposes a possible connection between an apparently unwounded victim and a specialist in poison.