Juurou Urano, father to Suzu, once managed a family-run seaweed cultivation and trade business in Hiroshima. As wartime economic pressures mounted, he abandoned the faltering coastal enterprise for factory labor, aligning with the nation’s pivot toward military-industrial production. Surviving the atomic blast’s initial devastation, he endured prolonged radiation exposure that gradually eroded his health. His eventual passing months later, communicated through the fragmented recollections of grieving relatives, avoided direct depiction.

Juurou’s trajectory embodies the economic struggles faced by small-business owners and laborers in wartime Japan, his occupational shift mirroring the destabilization of traditional livelihoods under militarized industrialization. The delayed nature of his demise emphasizes nuclear warfare’s insidious, enduring consequences, extending far beyond instantaneous destruction.