Ikuo Shinmasu retired in 2015 from Air Liquide Ltd., then researched his grandfather who migrated to Seattle. He shared his findings through the series, “Yoemon Shinmasu – My Grandfather’s Life in Seattle,” in the NAP and in Discover Nikkei in Japanese and English during 2019-2020. He lives in Zushi, Kanagawa, with his wife and son.