Japan's Home Islands stand behind the novel’s account of the Death Railway as both the imagined instrument of imperial ambition and a distant project whose human costs were not fully acknowledged at home. In the postwar chapters, the devastated cities of Tokyo and Kobe become places of hunger, concealment, and precarious survival. The contrast between a locomotive preserved at a national memorial and the unrecorded dead who built the railway makes the Home Islands central to the novel’s questions about remembrance and responsibility.

Imperial ambition and the railway

The railway does not run through Japan's Home Islands: its planned route stretches 415 kilometres from north of Bangkok toward Burma. But its construction is tied to the Japanese Empire’s military predicament. With the Allies supplying the Chinese Nationalist Army through Burma and the Americans controlling the seas, Japan sought a land route to support its forces in Burma. It lacked the money, machinery, and time to build one by ordinary means. Imperial conviction supplied the justification, and forced labour supplied the workforce.

The scale of that system reaches across the distance between the Home Islands and the railway’s work sites. Of 22,000 Australian POWs, many captured at the Fall of Singapore, 9,000 were sent to work on the railway. They were among approximately 60,000 Allied POWs and a much larger population of Asian labourers. Historians’ estimates of deaths among those Asian workers range from 50,000 to 200,000, and the novel stresses that no agreed total exists. The railway’s material record—surveyors’ pegs, cuttings, sleepers, rails, and the first train—therefore marks not only an engineering undertaking but a system that converted people into labour counted against a deadline.

The construction orders show how this conversion operated. When the Railway Command Group demanded that a major cutting already half-completed be enlarged by a third, the change required another 3,000 cubic metres of rock to be cut and removed. The work depended on POWs using hammers and chisels, despite shortages of proper tools and supplies. Colonel Kota tells Major Nakamura that the work must be completed even if most of the men die. The imperial project thus travels outward from command and national purpose into specific demands on materials, labour, and bodies.

The memorial and the missing record

The Home Islands preserve a sharply different view of the railway from the one created by its construction. Steam locomotive C 5631, which ran the length of the completed Death Railway on 25 October 1943, is displayed in the museum at Yasukuni Shrine in Tokyo. The shrine’s Book of Souls lists more than two million people who died in service to the Emperor of Japan between 1867 and 1951. Enshrinement there is associated with absolution, and the list includes 1,068 men convicted of war crimes and executed after the Second World War, among them men found guilty of mistreating POWs on the railway.

But the plaque in front of C 5631 does not mention the railway’s horrors or name the people who died building it. The shrine’s memorial form and the railway’s missing names stand in deliberate contrast: the engine is preserved and displayed, while the labourers who made its journey possible remain largely outside the public record. The novel does not offer a complete count to correct that omission. Instead, it emphasizes the uncertainty of the estimates and the absence of any comparable book for the many Asian workers whose names were forgotten.

Tokyo and the ruins of defeat

In postwar Tokyo, the imperial capital is reduced to damaged streets and makeshift shelter. After demobilisation, Tenji Nakamura lives among the ruins, extracting pieces of timber from destroyed buildings and selling them to a charcoal burner. His work brings little security; hunger shapes his days, and he survives partly by petty theft and black-market activity. A crowbar serves him as a tool for salvaging wood and as a means of self-defence. The former railway officer’s change of circumstance is measured less by a formal return to civilian life than by the small, immediate tasks of finding food, shelter, and a way to remain unnoticed.

A newspaper found in the rubble alters that fragile existence. It reports American warrants for former POW-camp staff suspected of war crimes, and Nakamura finds his name among the possible Class B war criminals. Afraid of arrest and execution, he steals money from a woman living in the Shinjuku Rashomon and uses it to buy false identity papers. He sells her clothes to fund a train ticket, leaving Tokyo for Kobe under the assumed identity Yoshio Kimura. The ruins do not simply mark Japan’s defeat; they provide the setting in which Nakamura’s fear of accountability turns into flight and concealment.

Kobe, recovery, and unresolved memory

Kobe, too, is described as a city devastated by bombing. Ikuko Kawabata, a nurse whom Nakamura meets years later, has lost her parents in the firebombing, and her brother has died of starvation after the war. Her losses are presented as part of a broadly shared civilian hardship, not as an exceptional story set apart from the ruined city around her. Through her, Nakamura finds work in a hospital, first as an orderly and then as a storeroom clerk, leaving his precarious black-market livelihood behind.

In time, Nakamura gives up his false identity, returns to his real name, marries Ikuko Kawabata, and has two daughters. Yet the novel presents this domestic life alongside an unsettled account of his wartime responsibility. His memory of wrongdoing fades, while stories of goodness and extenuating circumstances grow stronger. Japan's Home Islands thus hold both the possibility of ordinary postwar life and the conditions that permit a former officer to understand himself chiefly through survival, honour, and selective recollection.

A landscape beyond imperial purpose

The end of the war removes the purpose and support that sustained the railway. Japanese engineers and guards are imprisoned or repatriated, and the remaining labourers are freed. The Thai authorities abandon the line; the English dismantle it, and local people pull up and sell sections. Over time, embankments and bridges fail, cuttings fill, and vegetation returns among the railway’s remains. The novel’s account connects this physical unmaking to the imperial centre without suggesting that memorials or national borders can restore what was lost.

In the decades that follow, a few short sections are cleared and turned into tourist, sacred, and national sites. Such places preserve fragments, not a complete record of the dead or a settled meaning for the past. Against the locomotive displayed in Tokyo, the railway’s eventual disappearance offers a second image of history: infrastructure can be commemorated, dismantled, reclaimed, or left unnamed. Japan's Home Islands matter to this contrast because the novel places the preservation of imperial memory alongside the ruined cities and private lives in which its consequences continue.