Dual timelines explore a Japanese widow’s memories spanning post-war Nagasaki in 1950s and England during 1980s Cold War era, unraveling secrets that intertwine her past and present experiences across borders.

Kuno Totono, a curly-haired college student, visits Hiroshima and becomes embroiled in a mystery surrounding the inheritance of the Kariatsumari family’s assets, using his intelligence and loquaciousness to unravel the…