Watch VoirFilms. The short portrays the main character Outafukuko, a 1,028-year-old woman, making and sharing Issenyousho in a scene set in Hiroshima after the Second World War. Issenyousho is considered one of the early dishes that would eventually inspire okonomiyaki. October 10, the day the short went live, is "Okinomiyaki Day" in Japan.