Oizumi, Gunma

The Tōbu Koizumi Line moves slowly through flat farmland, and by the time it reaches Nishi-Koizumi Station, the signs outside have shifted — Portuguese alongside Japanese, a quiet announcement that this is different ground. Oizumi sits in the northern Kantō plain, compact in area but dense with industry and people, its factories producing everything from frozen foods to automobiles. The SUBARU plant and the Ajinomoto frozen food facility have drawn workers from Brazil and Peru since the 1990s, and their presence has become structural rather than incidental — woven into the shops, the schools, the rhythm of weekday mornings.

Walk the Izumi Greenway and the industrial history surfaces in a different register. The path follows the old Tōbu Sengoku Kashi Line corridor, now a pedestrian promenade threading through the town. Nearby, Jonai Park preserves the earthworks of Koizumi Castle, its inner and outer moats still readable in the landscape, the Jonai Kofun burial mound restored within the castle grounds. These are not polished attractions but ordinary civic spaces — used by families on weekends, by elderly residents on morning walks.

What gives the town its particular texture is the layering: wartime aircraft manufacturing at the Nakajima Hikoki Koizumi plant, postwar electronics and automobiles, then a wave of Nikkei workers reshaping the social fabric. The Hanamaruki and Ajinomoto factories remain active, their products moving quietly through supply chains most visitors never trace. Oizumi does not perform its complexity — it simply runs.