The extramarital affair between the narrator and Senko is exposed

The exposure of the narrator and Izumi’s affair turns a relationship they believed they could keep separate from their marriages into a crisis affecting both households. Its decisive consequence is not simply that the affair becomes known: the narrator’s wife leaves with their son, Izumi’s husband leaves her, and the two lovers are left facing the damage they had assumed could never reach them.

A relationship kept apart

The narrator and Izumi met whenever they could and were convinced that their relationship could continue indefinitely alongside their respective married lives. They treated the two arrangements as separate, imagining that intimacy between them need not amount to a consequential betrayal of their spouses. The narrator felt a pang of conscience when he returned home late and invented an explanation for his absence, but even that unease did not, in his account, make the affair feel like an actual betrayal.

Looking back, he considers more than one possible future they might have had if nothing had intervened. They could have continued meeting, drinking vodka and tonics, and slipping into bed together; alternatively, they might have tired of the lies and let the affair end, returning to their familiar lives. He cannot establish what would have happened, but he feels that either course might have avoided the disaster that followed. The confidence that their arrangement could last is therefore set against the narrator’s later recognition that its future was unknowable.

Discovery and confrontation

The turning point comes when Izumi’s husband learns of the affair. After questioning her, he goes to the narrator’s home in an uncontrolled state. The narrator’s wife is alone there, so she encounters the confrontation without him present. By the time he returns, the secret has already been disclosed, and he cannot plausibly deny what has happened. He tells his wife the truth.

That admission does not restore trust or open a path to explanation. His wife is shocked and refuses to listen; she falls silent and will not speak to him again. The sharp change is from a secret the lovers thought they could manage to a truth that neither household can absorb without rupture.

Separation and aftermath

The following day, the narrator’s wife packs her belongings, drives to her parents’ home in Chigasaki, and takes their son with her. The narrator tries calling, but she does not come to the phone. Her father answers instead, rejects the prospect of reconciliation, and says he had opposed the marriage from the beginning. His response gives the separation a longer family history: he regards the revelation as confirmation of his earlier judgment.

The narrator, unable to decide what to do, takes several days off and lies alone in bed. Izumi calls him from a similarly isolated position. Her husband has also left, after assaulting her and destroying all her clothing, from her overcoat to her underwear. She does not know where he has gone. She tells the narrator that she is exhausted, that everything is ruined, and that her husband will not return. Their shared affair has thus produced parallel abandonments, but not a shared resolution: each is left with the collapse of a separate marriage.

The limits of their certainty

Before discovery, the narrator and Izumi treated intimacy and married life as compartments that could coexist without consequence. The exposure reveals the weakness in that division. Their belief that the affair would never come to light had allowed them to imagine permanence, yet discovery immediately reaches spouses, a child, and extended family. The narrator’s retrospective alternatives—an affair continued indefinitely or one allowed to fade—remain possibilities he cannot verify; the actual outcome is defined by disclosure and separation.

The event is narrated in the first person as the narrator’s recollection, which gives the aftermath both personal immediacy and acknowledged uncertainty. He can recount the confrontation and its consequences, but he cannot know what would have happened had fate not intervened. What the episode establishes is narrower and more definite: the relationship they imagined as insulated was not insulated, and once it became visible, neither could return to the arrangement they had believed they controlled.